2015-01-09  Michael Collison  <michael.collison@linaro.org>
	
	* genattrtab.c (write_header): Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h when generating
	insn-attrtab.c.
	* genautomata.c (main) : Include hash-set.h, macInclude hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h when generating
	insn-automata.c.
	* genemit.c (main): Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h when generating
	insn-emit.c.
	* gengtype.c (open_base_files): Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h when generating
	gtype-desc.c.
	* genopinit.c (main): Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h when generating
	insn-opinit.c.
	* genoutput.c (output_prologue): Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h when generating
	insn-output.c.
	* genpeep.c (main): Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h when generating
	insn-peep.c.
	* genpreds.c (write_insn_preds_c): Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h when generating
	insn-preds.c.
	* optc-save-gen-awk: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h when generating
	options-save.c.
	* opth-gen.awk: Change include guard from GCC_C_COMMON_H to GCC_C_COMMON_C
	when generating options.h.
	* ada/gcc-interface/cuintp.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h,
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* ada/gcc-interface/decl.c: ditto.
	* ada/gcc-interface/misc.c: ditto.
	* ada/gcc-interface/targtyps.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h,
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* ada/gcc-interface/trans.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, real.h,
	fold-const.h, wide-int.h, inchash.h due to
	flattening of tree.h.
	* ada/gcc-interface/utils.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h,
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* ada/gcc-interface/utils2.c: ditto.
	* alias.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* asan.c: ditto.
	* attribs.c: ditto.
	* auto-inc-dec.c: ditto.
	* auto-profile.c: ditto
	* bb-reorder.c: ditto.
	* bt-load.c: Include symtab.h due to flattening of tree.h.
	* builtins.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* c/c-array-notation.c: ditto.
	* c/c-aux-info.c: ditto.
	* c/c-convert.c: ditto.
	* c/c-decl.c: ditto.
	* c/c-errors.c: ditto.
	* c/c-lang.c: dittoxs.
	* c/c-objc-common.c: ditto.
	* c/c-parser.c: ditto.
	* c/c-typeck.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, inchash.h, real.h and
	fixed-value.h due to flattening of tree.h.
	* calls.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* ccmp.c: ditto.
	* c-family/array-notation-common.c: ditto.
	* c-family/c-ada-spec.c: ditto.
	* c-family/c-cilkplus.c: ditto.
	* c-family/c-common.c: Include input.h due to flattening of tree.h.
	Define macro GCC_C_COMMON_C.
	* c-family/c-common.h: Flatten tree.h header files into c-common.h.
	Remove include of tree-core.h.
	* c-family/c-cppbuiltin.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* c-family/c-dump.c: ditto.
	* c-family/c-format.c: Flatten tree.h header files into c-common.h.
	* c-family/c-cppbuiltin.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* c-family/c-dump.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* c-family/c-format.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, inchash.h and real.h due to
	flattening of tree.h.
	* c-family/c-gimplify.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* c-family/cilk.c: ditto.
	* c-family/c-lex.c: ditto.
	* c-family/c-omp.c: ditto.
	* c-family/c-opts.c: ditto.
	* c-family/c-pch.c: ditto.
	* c-family/c-ppoutput.c: ditto.
	* c-family/c-pragma.c: ditto.
	* c-family/c-pretty-print.c: ditto.
	* c-family/c-semantics.c: ditto.
	* c-family/c-ubsan.c: ditto.
	* c-family/stub-objc.c: ditto.
	* cfgbuild.c: ditto.
	* cfg.c: ditto.
	* cfgcleanup.c: ditto.
	* cfgexpand.c: ditto.
	* cfghooks.c: ditto.
	* cfgloop.c: Include symtab.h, fold-const.h, and
	inchash.h due to flattening of tree.h.
	* cfgloopmanip.c: ditto.
	* cfgrtl.c:  Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* cgraphbuild.c: ditto.
	* cgraph.c: ditto.
	* cgraphclones.c: ditto.
	* cgraphunit.c: ditto.
	* cilk-common.c: ditto.
	* combine.c: ditto.
	* combine-stack-adj.c: Include symbol.h due to flattening of tree.h.
	* config/aarch64/aarch64-builtins.c:  Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* config/aarch64/aarch64.c: ditto.
	* config/alpha/alpha.c: ditto.
	* config/arc/arc.c: ditto.
	* config/arm/aarch-common.c: ditto.
	* config/arm/arm-builtins.c: ditto.
	* config/arm/arm.c: ditto.
	* config/arm/arm-c.c: ditto.
	* config/avr/avr.c: ditto.
	* config/avr/avr-c.c: ditto.
	* config/avr/avr-log.c: ditto.
	* config/bfin/bfin.c: ditto.
	* config/c6x/c6x.c: ditto.
	* config/cr16/cr16.c: ditto.
	* config/cris/cris.c: ditto.
	* config/darwin.c: ditto.
	* config/darwin-c.c: ditto.
	* config/default-c.c: ditto.
	* config/epiphany/epiphany.c: ditto.
	* config/fr30/fr30.c: ditto.
	* config/frv/frv.c: ditto.
	* config/glibc-c.c: ditto.
	* config/h8300/h8300.c: ditto.
	* config/i386/i386.c: ditto.
	* config/i386/i386-c.c: ditto.
	* config/i386/msformat.c: ditto.
	* config/i386/winnt.c: ditto.
	* config/i386/winnt-cxx.c: ditto.
	* config/i386/winnt-stubs.c: ditto.
	* config/ia64/ia64.c: ditto.
	* config/ia64/ia64-c.c: ditto.
	* config/iq2000/iq2000.c: ditto.
	* config/lm32/lm32.c: Include symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* config/m32c/m32c.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* config/m32c/m32c-pragma.c: ditto.
	* config/m32c/m32cr.c: ditto.
	* config/m68/m68k.c: ditto.
	* config/mcore/mcore.c: ditto.
	* config/mep/mep.c: ditto.
	* config/mep/mep-pragma.c: ditto.
	* config/microblaze/microblaze.c: ditto.
	* config/microblaze/microblaze-c.c: ditto.
	* config/mips/mips.c: ditto.
	* config/mmix/mmix.c: Include symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* config/mn10300/mn10300.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* config/moxie/moxie.c: ditto.
	* config/msp430/msp430.c: ditto.
	* config/msp430/msp430-c.c: ditto.
	* config/nds32/nds32.c: ditto.
	* config/nds32/nds32-cost.c: ditto.
	* config/nds32/nds32-fp-as-gp.c: ditto.
	* config/nds32/nds32-intrinsic.c: ditto.
	* config/nds32/nds32-isr.c: ditto.
	* config/nds32/nds32-md-auxillary.c: ditto.
	* config/nds32/nds32-memory-manipulationx.c: ditto.
	* config/nds32/nds32-pipelines-auxillary.c: ditto.
	* config/nds32/nds32-predicates.c: ditto.
	* config/nios2/nios2.c: ditto.
	* config/nvptx/nvptx.c: ditto.
	* config/pa/pa.c: ditto.
	* config/pdp11/pdp11x.c: Include symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* config/rl78/rl78.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* config/rl78/rl78-cx.c: ditto.
	* config/rs6000/rs6000.c: ditto.
	* config/rs6000/rs6000-c.c: ditto.
	* config/rx/rx.c: ditto.
	* config/s390/s390.c: ditto.
	* config/sh/sh.c: ditto.
	* config/sh/sc.c: ditto.
	* config/sh/sh-mem.cc: ditto.
	* config/sh/sh_treg_combine.cc: Include symtab.h, inchash.h and tree.h
	due to flattening of tree.h.
	Remove include of tree-core.h.
	* config/sol2.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* config/sol2-c.c: ditto.
	* config/sol2-cxx.c: ditto.
	* config/sol2-stubs.c: ditto.
	* config/sparc/sparc.c: ditto.
	* config/sparc/sparc-cx.c: ditto.
	* config/spu/spu.c: ditto.
	* config/spu/spu-c.c: ditto
	* config/storym16/stormy16.c: ditto.
	* config/tilegx/tilegx.c: Include symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* config/tilepro/gen-mul-tables.cc: Include symtab.h in generated file.
	* config/tilegx/tilegx-c.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* config/tilepro/tilepro.c: Include symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* config/tilepro/tilepro-c.c: Include hash-set.h, machmode.h,
	vec.h, double-int.h, input.h, alias.h, symtab.h, options.h
	fold-const.h, wide-int.h, and inchash.h due to
	flattening of tree.h.
	* config/v850/v850.c: ditto.
	* config/v850/v850-c.c: ditto.
	* config/vax/vax.c: ditto.
	* config/vms/vms.c: ditto.
	* config/vms/vms-c.c: ditto.
	* config/vxworks.c: ditto.
	* config/winnt-c.c: ditto.
	* config/xtensa/xtensa.c: Include symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* convert.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* coverage.c: ditto.
	* cp/call.c: ditto.
	* cp/class.c: ditto.
	* cp/constexpr.c: ditto.
	* cp/cp-array-notation.c: ditto.
	* cp/cp-gimplify.c: ditto.
	* cp/cp-lang.c: ditto.
	* cp/cp-objcp-common.c: ditto.
	* cp/cvt.c: ditto.
	* cp/decl2.c: ditto.
	* cp/decl.c: ditto.
	* cp/dump.c: ditto.
	* cp/error.c: ditto.
	* cp/except.c: ditto.
	* cp/expr.c: ditto.
	* cp/friend.c: ditto.
	* cp/init.c: ditto.
	* cp/lambda.c: ditto.
	* cp/lex.c: ditto.
	* cp/mangle.c: ditto.
	* cp/name-lookup.c: ditto.
	* cp/optimize.c: ditto.
	* cp/parser.c: ditto.
	* cp/pt.c: ditto.
	* cp/ptree.c: ditto.
	* cp/repo.c: ditto.
	* cp/rtti.c: ditto.
	* cp/search.c: ditto.
	* cp/semantics.c: ditto.
	* cp/tree.c: ditto.
	* cp/typeck2.c: ditto.
	* cp/typeck.c: ditto.
	* cppbuiltin.c: ditto.
	* cprop.c: ditto.
	* cse.c: Add include of symtab.h due to flattening of tree.h.
	* cselib.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* data-streamer.c: ditto.
	* data-streamer-in.c: ditto.
	* data-streamer-out.c: ditto.
	* dbxout.c: ditto.
	* dce.c: ditto.
	* ddg.c: Add include of symtab.h due to flattening of tree.h.
	* debug.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* dfp.c: ditto.
	* df-scan.c: ditto.
	* dojump.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, inchash.h and real.h due to flattening of tree.h.
	* double-int.c: ditto.
	* dse.c: ditto.
	* dumpfile.c: ditto.
	* dwarf2asm.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, inchash.h and real.h due to flattening of tree.h.
	* dwarf2cfi.c: ditto.
	* dwarf2out.c: ditto.
	* emit-rtl.c: ditto.
	* except.c: ditto.
	* explow.c: ditto.
	* expmed.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* expr.c: ditto.
	* final.c: ditto.
	* fixed-value.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, inchash.h and fixed-value.h due to flattening of tree.h.
	* fold-const.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	Relocate inline function convert_to_ptrofftype_loc from tree.h.
	Relocate inline function fold_build_pointer_plus_loc from tree.h.
	Relocate inline function fold_build_pointer_plus_hwi_loc from tree.h.
	* fold-const.h: Relocate macro convert_to_ptrofftype from tree.h.
	Relocate macro fold_build_pointer_plus to relocate from tree.h.h.
	Relocate macro fold_build_pointer_plus_hwi from tree.h.
	Add prototype for convert_to_ptrofftype_loc relocated from tree.h.
	Add prototype for fold_build_pointer_plus_loc relocated from tree.h.
	Add prototype for fold_build_pointer_plus_hwi_loc relocated from tree.h.
	* fortran/convert.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/cpp.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/decl.c: ditto.
	* fortran/f95.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/iresolve.c: ditto.
	* fortran/match.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/module.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/options.c: ditto.
	* fortran/target-memory.c: Include hash-set.h, vec.h,
	double-int.h, input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/trans-array.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/trans.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/trans-common.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/trans-const.c: ditto.
	* fortran/trans-decl.c: ditto.
	* fortran/trans-expr.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/trans-intrinsic.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, inchash.h and real.h due to flattening of tree.h.
	* fortran/trans-io.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* fortran/trans-openmp.c: ditto.
	* fortran/trans-stmt.c: ditto.
	* fortran/trans-types.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, inchash.h and real.h due to flattening of tree.h.
	* function.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* gcc-plugin.h: Include statistics.h, double-int.h, real.h, fixed-value.h,
	alias.h, flags.h, and symtab.h due to flattening of tree.h
	* gcse.c: ditto.
	* generic-match-head.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ggc-page.c:  Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* gimple-builder.c: ditto.
	* gimple.c: ditto.
	* gimple-expr.c: ditto.
	* gimple-fold.c: ditto.
	* gimple-iterator.c: ditto.
	* gimple-low.c: ditto.
	* gimple-match-head.c: ditto.
	* gimple-pretty-print.c: ditto.
	* generic-ssa-isolate-paths.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* gimple-ssa-strength-reduction.c: ditto.
	* gimple-streamer-in.c: ditto.
	* gimple-streamer-out.c: ditto.
	* gimple-walk.c:  Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* gimplify.c:  Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* gimplify-me.c: ditto.
	* go/go-gcc.cc: ditto.
	* go/go-lang.c: ditto.
	* go/gdump.c: ditto.
	* graphite-blocking.c: ditto.
	* graphite.c: ditto.
	* graphite-dependencies.c: ditto.
	* graphite-interchange.c: ditto.
	* graphite-isl-ast-to-gimple.c: ditto.
	* graphite-optimize-isl.c: ditto.
	* graphite-poly.c: ditto.
	* graphite-scop-detection.c: ditto.
	* graphite-sese-to-poly.c: ditto.
	* hw-doloop.c: Include symtab.h due to flattening of tree.h.
	* ifcvt.c: ditto.
	* init-regs.c:  Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* internal-fc.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h,options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ipa.c: ditto.
	* ipa-chkp.c: ditto.
	* ipa-comdats.c:  Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ipa-cp.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h,options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ipa-devirt.c:  Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ipa-icf.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h,options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ipa-icf-gimple.c: ditto.
	* ipa-inline-analysis.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ipa-inline.c: ditto.
	* ipa-inline-transform.c: ditto.
	* ipa-polymorhpic-call.c: ditto.
	* ipa-profile.c: ditto.
	* ipa-prop.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ipa-pure-const.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ipa-ref.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ipa-reference.c: ditto.
	* ipa-split.c: ditto.
	* ipa-utils.c: ditto.
	* ipa-visbility.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* ira.c: ditto.
	* ira-color.c: Include hash-set.h due to flattening of tree.h.
	* ira-costs.c: ditto.
	* ira-emit.c: ditto.
	* java/boehm.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* java/builtins.c: ditto.
	* java/class.c: ditto.
	* java/constants.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* java/decl.c: ditto.
	* java/except.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* java/expr.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h,inchash.h and real.h due to flattening of tree.h.
	* java/gimplify.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* java/jcf-dump.c: ditto.
	* java/jcf-io.c: ditto.
	* java/jcf-parse.c: ditto.
	* java/jvgenmain.c: ditto.
	* java/lang.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* java/mangle.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* java/mangle_name.c: ditto.
	* java/resource.c: ditto.
	* java/typeck.c: ditto.
	* java/verify-glue.c: ditto.
	* java/verify-impl.c: ditto.
	* jump.c: Include symtab.h due to flattening of tree.h.
	* langhooks.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* loop-doloop.c: Include symtab.h due to flattening of tree.h.
	* loop-init.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* loop-invariant.c: Include symtab.h due to flattening of tree.h.
	* loop-iv.c: ditto.
	* loop-unroll.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* lower-subreg.c: ditto.
	* lra-assigns.c: Include symtab.h due to flattening of tree.h.
	* lra.c: Include symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* lra-coalesce.c: Include symtab.h due to flattening of tree.h.
	* lra-constraints.c: ditto.
	* lra-eliminations.c: ditto.
	* lra-livesc: ditto.
	* lra-remat.c: ditto.
	* lra-spills.c: ditto.
	* lto/lto.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* lto/lto-lang.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* lto/lto-object.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* lto/lto-partition.c: ditto.
	* lto/lto-symtab.c: ditto.
	* lto-cgraph.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* lto-compress.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* lto-opts.c: ditto.
	* lto-section-in.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* lto-section-out.c: ditto.
	* lto-streamer.c: ditto.
	* lto-streamer-in.c: ditto.
	* lto-streamer-out.c: ditto.
	* modulo-sched.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* objc/objc-act.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options, fold-const.h,
	wide-int.h, and inchash.h due to flattening of tree.h.
	* objc/objc-encoding.c: ditto.
	* objc/objc-gnu-runtime-abi-01.c: ditto.
	* objc/objc-lang.c: ditto.
	* objc/objc-map.c: ditto.
	* objc/objc-next-runtime-abi-01.c: ditto.
	* objc/objc-next-runtime-abi-02.c: ditto.
	* objc/objc-runtime-shared-support.c: ditto.
	* objcp/objcp-decl.c: ditto.
	* objcp/objcp-lang.c: ditto.
	* omega.c: ditto.
	* omega-low.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* optabs.c: ditto.
	* opts-global.c: ditto.
	* passes.c: ditto.
	* plugin.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* postreload.c: Include symtab.h due to flattening of tree.h.
	* postreload-gcse.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* predict.c: ditto.
	* print-rtl.c: ditto.
	* print-tree.c: ditto.
	* profile.c: Include symtab.h, fold-const.h
	and inchash.h due to flattening of tree.h.
	* real.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* realmpfr.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* recog.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* ree.c: ditto.
	* reginfo.c: ditto.
	* reg-stack.c: ditto.
	* reload1.c: Include symtab.h, fold-const.h, wide-int.h
	and inchash.h due to flattening of tree.h.
	* reload.c: Include symtab.h due to flattening of tree.h.
	* reorg.c: ditto.
	* rtlanal.c: Include symtab.h, fold-const.h, wide-int.h
	and inchash.h due to flattening of tree.h.
	* rtl-chkp.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* rtlhooks.c: Include symtab.h due to flattening of tree.h.
	* sanopt.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* sched-deps.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* sched-vis.c: ditto.
	* sdbout.c: ditto.
	* sel-sched.c: Include symtab.h, fold-const.h, wide-int.h
	and inchash.h due to flattening of tree.h.
	* sel-sched-ir.c: ditto.
	* sese.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* shrink-wrap.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* simplify-rtx.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* stack-ptr-mod.c: ditto.
	* stmt.c: ditto.
	* store-motion.c: ditto.
	* store-layout.c: ditto.
	* stringpool.c: ditto.
	* symtab.c: ditto.
	* target-globals.c: ditto.
	* targhooks.c: ditto.
	* toplev.c: ditto.
	* tracer.c: ditto.
	* trans-mem.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* tree-affine.c: ditto.
	* tree-browser.c: ditto.
	* tree.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* tree-call-cdce.c: Include symtab.h, alias.h, double-int.h,
	fold-const.h, wide-int.h, inchash.h and real.h due to
	flattening of tree.h.
	* tree-cfg.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* tree-cfgcleanup.c: ditto.
	* tree-chkp.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* tree-chkp-opt.c: ditto.
	* tree-chrec.c: ditto.
	* tree-chkp-opt.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, inchash.h and
	real.h due to flattening of tree.h.
	* tree-core.h: Flatten header file by removing all #include statements.
	* tree-data-ref.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* tree-dfa.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, inchash.h and
	real.h due to flattening of tree.h.
	* tree-diagnostic.c: ditto.
	* tree-dump.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, inchash.h, real.h and
	fixed-value.h due to flattening of tree.h.
	* tree-dfa.c: ditto.
	* tree-eh.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, inchash.h and
	real.h due to flattening of tree.h.
	* tree-emutls.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* tree.h: Flatten header files by removing all includes except tree-core.h.
	Remove inline function convert_to_ptrofftype_loc to relocate to fold-const.c.
	Remove macro convert_to_ptrofftype to relocate to fold-const.h.
	Remove inline function fold_build_pointer_plus_loc to relocate to fold-const.c.
	Remove macro fold_build_pointer_plus to relocate to fold-const.h.
	Remove inline function fold_build_pointer_plus_hwi_loc to relocate to fold-const.c.
	Remove macro fold_build_pointer_plus_hwi to relocate to fold-const.h.
	* tree-if-conv.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, inchash.h, real.h and
	fixed-value.h due to flattening of tree.h.
	* tree-inline.c: ditto.
	* tree-into-ssa.c: ditto.
	* tree-iterator.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* tree-loop-distribution.c: ditto.
	* tree-nested.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* tree-nrv.c: ditto.
	* tree-object-size.c: ditto.
	* tree-outof-ssa.c: ditto.
	* tree-parloops.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* tree-phinodes.c: ditto.
	* tree-predcom.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* tree-pretty-print.c: ditto.
	* tree-profile.c: double-int.h, input.h, alias.h, symtab.h,
	fold-const.h, wide-int.h and inchash.h due to flattening of tree.h.
	* tree-scalar-evolution.c: Include hash-set.h, machmode.h, vec.h,
	double-int.h, input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h and inchash.h due to flattening of tree.h.
	* tree-sra.c: Include  vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, and
	inchash.h due to flattening of tree.h.
	* tree-ssa-alias.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* tree-ssa.c: ditto.
	* tree-ssa-ccp.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, inchash.h
	and real.h due to flattening of tree.h.
	* tree-ssa-coalesce.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* tree-ssa-copy.c: ditto.
	* tree-ssa-copyrename.c: ditto.
	* tree-ssa-dce.c: ditto.
	* tree-ssa-dom.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h, inchash.h
	and real.h due to flattening of tree.h.
	* tree-ssa-dse.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* tree-ssa-forwprop.c: ditto.
	* tree-ssa-ifcombine.c: ditto.
	* tree-ssa-live.c: ditto.
	* tree-ssa-loop.c: ditto.
	* tree-ssa-loop-ch.c: ditto.
	* tree-ssa-loop-im.c: ditto.
	* tree-ssa-loop-ivcanon.c: ditto.
	* tree-ssa-loop-ivopts.c: ditto.
	* tree-ssa-loop-manip.c: ditto.
	* tree-ssa-loop-niter.c: ditto.
	* tree-ssa-loop-prefetch.c: ditto.
	* tree-ssa-loop-unswitch.c: ditto.
	* tree-ssa-loop-math-opts.c: ditto.
	* tree-ssanames.c: ditto.
	* tree-ssa-operands.c: ditto.
	* tree-ssa-phiopt.c: ditto.
	* tree-ssa-phiprop.c: ditto.
	* tree-ssa-pre.c: ditto.
	* tree-ssa-propagate.c: ditto.
	* tree-ssa-reassoc.c: ditto.
	* tree-ssa-sccvn.c: ditto.
	* tree-ssa-sink.c: ditto.
	* tree-ssa-strlen.c: Include hash-set.h, machmode.h, vec.h,
	double-int.h, input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h and inchash.h due to flattening of tree.h.
	* tree-ssa-structalias.c: double-int.h, input.h, alias.h, symtab.h,
	fold-const.h, wide-int.h and inchash.h due to flattening of tree.h.
	* tree-ssa-tail-merge.c: Include hash-set.h, machmode.h, vec.h,
	double-int.h, input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h and inchash.h due to flattening of tree.h.
	* tree-ssa-ter.c: ditto.
	* tree-ssa-threadedge.c: ditto.
	* tree-ssa-threadupdate.c: Include hash-set.h, machmode.h, vec.h,
	double-int.h, input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h and inchash.h due to flattening of tree.h.
	* tree-ssa-uncprop.c: Include hash-set.h, machmode.h, vec.h,
	double-int.h, input.h, alias.h, symtab.h, fold-const.h,
	wide-int.h and inchash.h due to flattening of tree.h.
	* tree-ssa-uninit.c: ditto.
	* tree-stdarg.c: Include vec.h, double-int.h, input.h, alias.h,
	symtab.h, fold-const.h, wide-int.h and inchash.h due to flattening
	of tree.h.
	* tree-streamer.c: Include vec.h, double-int.h, input.h, alias.h,
	symtab.h, options.h, fold-const.h, wide-int.h and
	inchash.h due to flattening of tree.h.
	* tree-streamer-in.c: Include hash-set.h, machmode.h, vec.h,
	double-int.h, input.h, alias.h, symtab.h, options.h, fold-const.h,
	wide-int.h, inchash.h, real.h and fixed-value.h due to flattening
	of tree.h.
	* tree-streamer-out.c: dittoo.
	* tree-switch-conversion.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* tree-tailcall.c: ditto.
	* tree-vect-data-refs.c: ditto.
	* tree-vect-generic.c: Include hash-set.h, machmode.h, vec.h, double-int.h, input.h,
	alias.h, symtab.h, options.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* tree-vect-loop.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* tree-vect-loop-manip.c: ditto.
	* tree-vectorizer.c: ditto.
	* tree-vect-patterns.c: ditto.
	* tree-vect-slp.c: ditto.
	* tree-vect-stmts.c: ditto.
	* tree-vrp.c: ditto.
	* tsan.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* ubsan.c: ditto.
	* value-prof.c.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* varasm.c: ditto.
	* varpool.c: ditto.
	* var-tracking.c: ditto.
	* vmsdbgout.c: ditto.
	* vtable-verify.c: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* wide-int.cc: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.
	* xcoffout.c: ditto.
	* libcc1/plugin.cc: Include hash-set.h, machmode.h, vec.h, double-int.h,
	input.h, alias.h, symtab.h, options.h, fold-const.h, wide-int.h and inchash.h
	due to flattening of tree.h.

From-SVN: r219402