winnt.c (i386_pe_asm_output_aligned_decl_common): Revert accidental And undocumented change at revision 140860.

	* config/i386/winnt.c (i386_pe_asm_output_aligned_decl_common): Revert
	accidental And undocumented change at revision 140860.

From-SVN: r144345

	* config/arm/arm.c (arm_gimplify_va_arg_expr): Update prototype to
	take gimple_seq * arguments.
	(arm_mangle_type): Use CONST_CAST_TREE on type argument passed to
	types_compatible_p langhook.

From-SVN: r144344

2009-02-20  Benjamin Kosnik  <bkoz@redhat.com>

	* doc/doxygen/user.cfg.in: Tweaks.
	* doc/doxygen/doxygroups.cc: Prefer markup that can be elsewhere,
	be elsewhere.

	* include/tr1_impl/unordered_map: Just use most specialized
	container module.
	* include/tr1_impl/unordered_set: Same.
	* include/tr1_impl/array: Same.
	* include/bits/stl_list.h: Same.
	* include/bits/stl_map.h: Same.
	* include/bits/stl_queue.h: Same.
	* include/bits/stl_set.h: Same.
	* include/bits/stl_stack.h: Same.
	* include/bits/forward_list.h: Same.
	* include/bits/basic_string.h: Same.
	* include/bits/stl_multimap.h: Same.
	* include/bits/stl_vector.h: Same.
	* include/bits/stl_deque.h: Same.
	* include/bits/stl_multiset.h: Same.
	* include/bits/stl_bvector.h: Same.

	* include/backward/binders.h: Change binder module to binders.

	* include/std/complex: Add complex_numers module.
	* include/tr1_impl/complex: Same.

	* include/std/valarray: Add numeric_arrays module.
	* include/bits/gslice_array.h: Same.
	* include/bits/gslice.h: Same.
	* include/bits/mask_array.h: Same.
	* include/bits/slice_array.h: Same.
	* include/bits/indirect_array.h: Same.

	* include/bits/allocator.h: Add allocators module.
	* include/ext/throw_allocator.h
	* include/ext/pool_allocator.h
	* include/ext/bitmap_allocator.h
	* include/ext/new_allocator.h
	* include/ext/malloc_allocator.h
	* include/ext/array_allocator.h
	* include/ext/mt_allocator.h
	* include/ext/debug_allocator.h
	* include/ext/extptr_allocator.h

	* include/tr1_impl/functional: Move namespace markup here.
	* include/tr1_impl/regex: Same.

	* include/tr1_impl/type_traits: Add metaprogramming module.
	* include/std/type_traits: Same.

	* include/std/memory: Add memory module.

	* include/std/ratio: Add ratio module.

	* include/std/chrono: Move namespace markup here, add time module.

	* include/std/thread: Move namespace markup here, add concurrency
	module.
	* include/std/mutex: Use concurrency module.
	* include/std/condition_variable: Same.


	* include/bits/ios_base.h: Refine io module.
	* include/bits/basic_ios.h: Same.
	* include/std/fstream: Same.
	* include/std/istream: Same.
	* include/std/ostream: Same.
	* include/std/sstream: Same.

	* include/ext/vstring.h: Correct parameter markup.

	* include/bits/shared_ptr.h: Add pointer_abstractions module.
	* include/bits/unique_ptr.h: Same.

	* include/bits/algorithmfwd.h: Add mutating_algorithms,
        non_mutating_algorithms, sorting_algorithms. Adjust nesting.
	* include/bits/stl_heap.h: Add markup for new groupings.
	* include/bits/stl_algobase.h: Same.
	* include/bits/stl_algo.h: Same.

	* include/c_compatibility/stdatomic.h: Add atomics module.
	* include/c_global/cstdatomic: Same.

	* libsupc++/exception: Add exceptions module.
	* libsupc++/typeinfo: Same.
	* libsupc++/new: Same.
	* libsupc++/exception_ptr.h: Same.
	* include/std/system_error: Same.
	* include/std/stdexcept: Same.

	* libsupc++/cxxabi.h: Move doxygroups.cc markup here.
	* libsupc++/cxxabi-forced.h: Same.

	* testsuite/27_io/ios_base/cons/assign_neg.cc: Fix up line numbers.
	* testsuite/27_io/ios_base/cons/copy_neg.cc: Same.
	* testsuite/30_threads/condition_variable_any/cons/assign_neg.cc: Same.
	* testsuite/30_threads/condition_variable_any/cons/copy_neg.cc: Same.
	* testsuite/30_threads/mutex/cons/assign_neg.cc: Same.
	* testsuite/30_threads/mutex/cons/copy_neg.cc: Same.
	* testsuite/30_threads/timed_mutex/cons/assign_neg.cc: Same.
	* testsuite/30_threads/timed_mutex/cons/copy_neg.cc: Same.
	* testsuite/30_threads/thread/cons/assign_neg.cc: Same.
	* testsuite/30_threads/thread/cons/copy_neg.cc: Same.
	* testsuite/30_threads/recursive_mutex/cons/assign_neg.cc: Same.
	* testsuite/30_threads/recursive_mutex/cons/copy_neg.cc: Same.
	* testsuite/30_threads/condition_variable/cons/assign_neg.cc: Same.
	* testsuite/30_threads/condition_variable/cons/copy_neg.cc: Same.
	* testsuite/30_threads/recursive_timed_mutex/cons/assign_neg.cc: Same.
	* testsuite/30_threads/recursive_timed_mutex/cons/copy_neg.cc: Same.
	* testsuite/29_atomics/atomic/cons/assign_neg.cc: Same.
	* testsuite/29_atomics/atomic/cons/copy_neg.cc: Same.
	* testsuite/23_containers/vector/requirements/dr438/assign_neg.cc: Same.
	* testsuite/23_containers/vector/requirements/dr438/insert_neg.cc: Same.
	* testsuite/23_containers/vector/requirements/dr438/
	constructor_1_neg.cc: Same.
	* testsuite/23_containers/vector/requirements/dr438/
	constructor_2_neg.cc: Same.
	* testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Same.
	* testsuite/23_containers/deque/requirements/dr438/insert_neg.cc: Same.
	* testsuite/23_containers/deque/requirements/dr438/
	constructor_1_neg.cc: Same.
	* testsuite/23_containers/deque/requirements/dr438/
	constructor_2_neg.cc: Same.
	* testsuite/23_containers/list/requirements/dr438/assign_neg.cc: Same.
	* testsuite/23_containers/list/requirements/dr438/insert_neg.cc: Same.
	* testsuite/23_containers/list/requirements/dr438/
	constructor_1_neg.cc: Same.
	* testsuite/23_containers/list/requirements/dr438/
	constructor_2_neg.cc: Same.
	* testsuite/20_util/duration/cons/1_neg.cc: Same.
	* testsuite/20_util/duration/requirements/typedefs_neg1.cc: Same.
	* testsuite/20_util/duration/requirements/typedefs_neg2.cc: Same.
	* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Same.
	* testsuite/20_util/unique_ptr/modifiers/reset_neg.cc: Same.
	* testsuite/20_util/unique_ptr/assign/assign.cc: Same.
	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Same.
	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc: Same.
	* testsuite/20_util/ratio/cons/cons_overflow.cc: Same.
	* testsuite/20_util/ratio/operations/ops_overflow.cc: Same.

From-SVN: r144343

From-SVN: r144341

From-SVN: r144324

2009-02-20  Mark Mitchell  <mark@codesourcery.com>
            Joseph Myers  <joseph@codesourcery.com>

	* config/arm/arm.c (arm_builtin_va_list): New function.
	(arm_expand_builtin_va_start): Likewise.
	(arm_gimplify_va_arg_expr): Likewise.
	(TARGET_BUILD_BUILTIN_VA_LIST): Define.
	(TARGET_BUILD_BUILTIN_VA_START): Likewise.
	(TARGET_BUILD_BUILTIN_VA_ARG_EXPR): Likewise.
	(va_list_type): New variable.
	(arm_mangle_type): Mangle va_list_type appropriately.

testsuite:
	* gcc.target/arm/va_list.c: New test.
	* g++.dg/abi/arm_va_list.C: Likewise.
	* lib/target-supports.exp (check_effective_target_arm_eabi): New
	function.
	* g++.dg/cpp0x/temp-va-arg-bug.C, g++.dg/other/stdarg1.C,
	g++.dg/warn/miss-format-1.C, g++.dg/warn/miss-format-3.C,
	g++.dg/warn/miss-format-4.C, g++.dg/warn/miss-format-5.C,
	g++.dg/warn/miss-format-6.C, g++.old-deja/g++.other/vaarg2.C,
	g++.old-deja/g++.other/vaarg3.C, g++.old-deja/g++.other/vaarg4.C,
	g++.old-deja/g++.pt/builtin.C: Use -Wno-abi on ARM EABI targets.

Co-Authored-By: Joseph Myers <joseph@codesourcery.com>

From-SVN: r144323

re PR middle-end/39157 (Code that compiles fine in 1GB of memory with 4.1.2 requires > 20GB in 4.2.* and higher)

	PR middle-end/39157
	* Makefile.in (loop-invariant.o): Depend on $(PARAMS_H).
	* params.h (LOOP_INVARIANT_MAX_BBS_IN_LOOP): Define.
	* params.def (loop-invariant-max-bbs-in-loop): New parameter.
	* opts.c (decode_options): Set loop-invariant-max-bbs-in-loop
	parameter to 1000 for -O1 by default.
	* doc/invoke.texi (loop-invariant-max-bbs-in-loop): Document new
	parameter.
	* loop-invariant.c: Include params.h.
	(move_loop_invariants): Don't call move_single_loop_invariants on
	very large loops.

From-SVN: r144320

	PR testsuite/38164
	* gcc.target/i386/amd64-abi-3.c: Add -fomit-frame-pointer
	to dg-options.

From-SVN: r144318

calls.c (emit_library_call_value_1): Use slot_offset instead of offset when calculating bounds for indexing...

	* calls.c (emit_library_call_value_1): Use slot_offset instead of
	offset when calculating bounds for indexing stack_usage_map.  Fixes
	a buffer overflow with certain target setups.

From-SVN: r144317

re PR target/39240 (Invalid sibcall optimization with promoted return types and differing signedness)

	PR target/39240
	* calls.c (expand_call): Clear try_tail_call if caller and callee
	disagree in promotion of function return value.

	* gcc.c-torture/execute/pr39240.c: New test.

From-SVN: r144316

        PR c++/39225
        * decl.c (grokdeclarator): Handle ~identifier.

From-SVN: r144314

From-SVN: r144311

From-SVN: r144307

	* gcc.target/mips/mips.exp: Comment !CPU in the isa* pseudo-options.
	(mips-dg-options): When matching isa* pseudo-options make
	'value' optional and accept ! entries.  Use $spec instead of
	$isa_spec in the isa pseudo-option error message.  Only
	perform the ISA-range check when 'value' is set.  If arch is
	matching any CPU in the ! entries switch to its generic ISA.
	* gcc.target/mips/branch-1.c: Pass isa=!octeon.
	* gcc.target/mips/dmult-1.c: Pass isa=64!octeon rather than
	-mips64.

From-SVN: r144306

	PR target/39175
	* c-common.c (c_determine_visibility): If visibility changed and
	DECL_RTL has been already set, call make_decl_rtl to update symbol
	flags.

	* decl2.c (determine_visibility): If visibility changed and
	DECL_RTL has been already set, call make_decl_rtl to update symbol
	flags.

	* gcc.dg/visibility-20.c: New test.
	* g++.dg/ext/visibility/visibility-11.C: New test.

From-SVN: r144305

2009-02-19  Daniel Franke  <franke.daniel@gmail.com>

        * scanner.c (load_line): At end of line, skip '\r' without setting
        the truncation flag.

From-SVN: r144303

gcc/

2009-02-19  H.J. Lu  <hongjiu.lu@intel.com>

	PR c++/39188
	* varasm.c (assemble_variable): Don't check DECL_NAME when
	globalizing a variable.

gcc/cp/

2009-02-19  H.J. Lu  <hongjiu.lu@intel.com>

	PR c++/39188
	* cp-tree.h (maybe_commonize_var): New.

	* decl.c (maybe_commonize_var): Make it extern.

	* decl2.c (finish_anon_union): Call maybe_commonize_var.

gcc/testsuite/

2009-02-19  H.J. Lu  <hongjiu.lu@intel.com>

	PR c++/39188
	* g++.dg/abi/pr39188-1a.C: New.
	* g++.dg/abi/pr39188-1b.C: Likewise.
	* g++.dg/abi/pr39188-1.h: Likewise.
	* g++.dg/abi/pr39188-2a.C: Likewise.
	* g++.dg/abi/pr39188-2b.C: Likewise.
	* g++.dg/abi/pr39188-2.h: Likewise.
	* g++.dg/abi/pr39188-3a.C: Likewise.
	* g++.dg/abi/pr39188-3b.C: Likewise.
	* g++.dg/abi/pr39188-3.h: Likewise.

From-SVN: r144297

	PR c/38483
	* builtins.c (gimplify_va_arg_expr): Evaluate the va_list
	expression before any __builtin_trap call.
	* c-typeck.c (build_function_call): Convert and check function
	arguments before generating a call to a trap.  Evaluate the
	function arguments before the trap.

testsuite:
	* gcc.c-torture/execute/call-trap-1.c,
	gcc.c-torture/execute/va-arg-trap-1.c, gcc.dg/call-diag-1.c: New
	tests.

From-SVN: r144296

	PR target/39228
	* config/i386/i386.md (isinfxf2): Split from isinf<mode>2.
	(UNSPEC_FXAM_MEM): New unspec.
	(fxam<mode>2_i387_with_temp): New insn and split pattern.
	(isinf<mode>2): Use MODEF mode iterator.  Force operand[1] through
	memory using fxam<mode>2_i387_with_temp to remove excess precision.

testsuite/ChangeLog:

	PR target/39228
	* gcc.c-torture/execute/pr39228.c: New test.

From-SVN: r144293

2009-02-19  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/39207
	PR tree-optimization/39074
	* tree-ssa-structalias.c (storedanything_id, var_storedanything,
	storedanything_tree): New.
	(do_ds_constraint): Simplify ANYTHING shortcutting.  Update
	the STOREDANYTHING solution if the lhs solution contains
	ANYTHING.
	(build_succ_graph): Add edges from STOREDANYTHING to all
	non-direct nodes.
	(init_base_vars): Initialize STOREDANYTHING.
	(compute_points_to_sets): Free substitution info after
	building the succ graph.
	(ipa_pta_execute): Likewise.

	* gcc.dg/torture/pr39074.c: New testcase.
	* gcc.dg/torture/pr39074-2.c: Likewise.
	* gcc.dg/torture/pr39074-3.c: Likewise.

	* tree-ssa-structalias.c (struct variable_info): Add may_have_pointers
	field.
	(do_ds_constraint): Do not add to special var or non-pointer
	field solutions.
	(type_could_have_pointers): Split out from ...
	(could_have_pointers): ... here.  For arrays use the element type.
	(create_variable_info_for): Initialize may_have_pointers.
	(new_var_info): Likewise.
	(handle_lhs_call): Make the HEAP variable unknown-sized.
	(intra_create_variable_infos): Use a type with pointers for
	PARM_NOALIAS, make it unknown-sized.

From-SVN: r144292

2009-02-18  Benjamin Kosnik  <bkoz@redhat.com>

	* doc/doxygen/doxygroups.cc: Move algorithm groups into algorithmfwd.h.
	* doc/doxygen/user.cfg.in: Update.
	* scripts/run_doxygen: Adjust for new group names.

	* include/tr1_impl/random: Update doxygen group markup.
	* include/tr1_impl/unordered_map: Same.
	* include/tr1_impl/unordered_set: Same.
	* include/tr1_impl/array: Same.
	* include/std/numeric: Same.
	* include/std/utility: Same.
	* include/std/bitset: Same.
	* include/std/iosfwd: Same.
	* include/bits/stl_list.h: Same.
	* include/bits/stl_map.h: Same.
	* include/bits/stl_algobase.h: Same.
	* include/bits/stl_queue.h: Same.
	* include/bits/stl_set.h: Same.
	* include/bits/stl_stack.h: Same.
	* include/bits/stl_iterator_base_types.h: Same.
	* include/bits/forward_list.h: Same.
	* include/bits/basic_string.h: Same.
	* include/bits/stl_multimap.h: Same.
	* include/bits/stl_vector.h: Same.
	* include/bits/stl_deque.h: Same.
	* include/bits/stl_multiset.h: Same.
	* include/bits/stl_algo.h: Same.
	* include/bits/stl_bvector.h: Same.
	* include/bits/algorithmfwd.h: Same.
	* include/bits/stl_function.h: Same.
	* include/tr1/cmath: Same.
	* include/backward/binders.h: Same.

From-SVN: r144290

gcc/cp

2009-02-18  H.J. Lu  <hongjiu.lu@intel.com>

	PR c++/39219
	* parser.c (cp_parser_enum_specifier): Apply all attributes.

gcc/testsuite/

2009-02-18  H.J. Lu  <hongjiu.lu@intel.com>

	PR c++/39219
	* g++.dg/parse/attr3.C: New.

From-SVN: r144284

From-SVN: r144282

2009-02-18  Jack Howarth <howarth@bromo.med.uc.edu>

	PR testsuite/38165
	* g++.dg/pubtypes.C: Adopt Radar 4535968 fix to testcase.

From-SVN: r144277

2009-02-18  Jack Howarth <howarth@bromo.med.uc.edu>

	PR testsuite/38166
	* g++.dg/ext/visibility/class1.C: Revert revision 122348
	and skip on Darwin.

From-SVN: r144274

2009-02-18  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/39224
	* config/i386/i386.c (ix86_return_in_memory): Properly check
	ABI.

From-SVN: r144272

From-SVN: r144271

        PR target/39179
        * tree-ssa-ccp.c (get_symbol_constant_value): Don't assume zero
        value if DECL_EXTERNAL.
        * tree-sra.c (sra_walk_gimple_assign): Likewise.
        * target.h (gcc_target::binds_local_p): Clarify module.
        * tree.h (TREE_PUBLIC): Clarify module.

From-SVN: r144270

From-SVN: r144269

2009-02-18  Daniel Kraft  <d@domob.eu>

	* gfortran.texi: New chapter about compiler characteristics.
	(Compiler Characteristics): Document KIND type parameters here.

From-SVN: r144268

2009-02-18  H.J. Lu  <hongjiu.lu@intel.com>

	* gcc-interface/misc.c (gnat_post_options): Turn off warn_psabi.

From-SVN: r144267

2009-02-18  Tobias Burnus  <burnus@net-b.de>

       * intrinsic.texi (MALLOC): Make example more portable.

From-SVN: r144266

2009-02-18  H.J. Lu  <hongjiu.lu@intel.com>

	* gcc.dg/callabi/callabi.exp: Moved to ...
	* gcc.target/x86_64/abi/callabi/callabi.exp: Here.  Only run
	in 64bit mode.

	* gcc.target/x86_64/abi/callabi/func-1.c: Don't check target.
	* gcc.target/x86_64/abi/callabi/func-indirect.c: Likewise.
	* gcc.target/x86_64/abi/callabi/func-indirect.c: Likewise.
	* gcc.target/x86_64/abi/callabi/pr38891.c: Likewise.
	* gcc.target/x86_64/abi/callabi/vaarg-1.c: Likewise.
	* gcc.target/x86_64/abi/callabi/vaarg-2.c: Likewise.
	* gcc.target/x86_64/abi/callabi/vaarg-3.c: Likewise.

	* gcc.dg/callabi/callabi.h: Moved to ...
	* gcc.target/x86_64/abi/callabi/callabi.h: Here.

	* gcc.dg/callabi/func-1.c: Moved to ...
	* gcc.target/x86_64/abi/callabi/func-1.c: Here.

	* gcc.dg/callabi/func-indirect.c: Moved to ...
	* gcc.target/x86_64/abi/callabi/func-indirect.c: Here.

	* gcc.dg/callabi/pr38891.c: Moved to ...
	* gcc.target/x86_64/abi/callabi/pr38891.c: Here.

	* gcc.dg/callabi/vaarg-1.c: Moved to ...
	* gcc.target/x86_64/abi/callabi/vaarg-1.c: Here.

	* gcc.dg/callabi/vaarg-2.c: Moved to ...
	* gcc.target/x86_64/abi/callabi/vaarg-2.c: Here.

	* gcc.dg/callabi/vaarg-3.c: Moved to ...
	* gcc.target/x86_64/abi/callabi/vaarg-3.c: Here.

From-SVN: r144264

2009-02-18  Bingfeng Mei  <bmei@broadcom.com>

	* MAINTAINERS (Write After Approval): Add myself.

From-SVN: r144260

2009-02-17  Benjamin Kosnik  <bkoz@redhat.com>

	* include/std/system_error (system_category): To system_category().
	(generic_category): To generic_category. DR 890.
	* src/system_error.cc: Define.
	* include/bits/functexcept.h: Only one __throw_system_error.
	* src/functexcept.cc: Same.
	* include/std/mutex: Fixup for changes above.
	* testsuite/19_diagnostics/error_condition/cons/1.cc: Same.
	* testsuite/19_diagnostics/error_code/cons/1.cc: Same.
	* testsuite/19_diagnostics/system_error/cons-1.cc: Same.
	* config/abi/pre/gnu.ver: Clean up exports.

From-SVN: r144259

re PR target/38891 (using ms_abi function attribute with -mno-sse generates an internal compiler error)

gcc/

2009-02-17  Xuepeng Guo  <xuepeng.guo@intel.com>

	PR target/38891
	* config/i386/i386.h (CONDITIONAL_REGISTER_USAGE): Move the hunk of
	initialization for MS_ABI prior to the hunk of !TARGET_MMX.

gcc/testsuite

2009-02-17  Xuepeng Guo  <xuepeng.guo@intel.com>

	PR target/38891
	* gcc.dg/callabi/pr38891.c: New.

2009-02-17  H.J. Lu  <hongjiu.lu@intel.com>

	* gcc.dg/callabi/callabi.exp: New.

From-SVN: r144258

gcc/

2009-02-17  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/39082
	* c.opt (Wabi): Support C and ObjC.
	(Wpsabi): New.

	* c-opts.c (c_common_handle_option): Handle OPT_Wabi.

	* config/i386/i386.c (classify_argument): Warn once about the ABI
	change when passing union with long double.

	* doc/invoke.texi: Update -Wabi for warning psABI changes.

gcc/testsuite/

2009-02-17  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/39082
	* g++.dg/compat/struct-layout-1_generate.c (dg_options): Add
	-Wno-abi for x86.
	* gcc.dg/compat/struct-layout-1_generate.c (dg_options): Likewise.

	* gcc.target/i386/pr39082-1.c: New.

	* gcc.target/x86_64/abi/abi-x86_64.exp (additional_flags): Add
	-Wno-abi.

	* gcc.target/x86_64/abi/args.h (XMM_T): Add _m64 and _m128 if
	CHECK_M64_M128 is defined.
	(check_f_arguments): Add "do".
	(check_vector_arguments): New.
	(check_m64_arguments): Likewise.
	(check_m128_arguments): Likewise.

	* gcc.target/x86_64/abi/defines.h: Include <xmmintrin.h>.
	(CHECK_M64_M128): Define.

	* gcc.target/x86_64/abi/test_m64m128_returning.c: New.  Based
	on abitest.
	* gcc.target/x86_64/abi/test_passing_m64m128.c: Likewise.

	* gcc.target/x86_64/abi/test_passing_structs.c: Define __m128
	tests only if CHECK_M64_M128 is defined.

	* gcc.target/x86_64/abi/test_passing_structs.c (m128_struct): New.
	(m128_2_struct): Likewise.
	(check_struct_passing5): Likewise.
	(check_struct_passing6): Likewise.
	(main): Test struct with __m128 if CHECK_M64_M128 is defined.

	* gcc.target/x86_64/abi/test_passing_unions.c (un4): New.
	(un5): Likewise.
	(check_union_passing4): Likewise.
	(main): Test union with __m128 if CHECK_M64_M128 is defined.

From-SVN: r144257

	PR c/35447
	* c-parser.c (c_parser_compound_statement): Always enter and leave
	a scope.

testsuite:
	* gcc.dg/noncompile/pr35447-1.c: New test.

From-SVN: r144256

From-SVN: r144254

	PR target/34587
	* config/darwin.h (SUPPORTS_INIT_PRIORITY): Define.

From-SVN: r144251