gcc/
	* Makefile.in (READ_MD_H): New variable.
	(BUILD_RTL): Add build/read-md.o.
	(lto-wrapper.o): Depend on coretypes.h instead of defaults.h.
	(build/gensupport.o, build/read-rtl.o, build/genattr.o)
	(build/genattrtab.o, build/genconditions.o build/genemit.o)
	(build/genextract.o, build/genflags.o, build/genoutput.o)
	(build/genpreds.o, build/genrecog.o): Depend on $(READ_MD_H).
	(build/read-md.o): New rule.
	* defaults.h (obstack_chunk_alloc, obstack_chunk_free)
	(OBSTACK_CHUNK_SIZE, gcc_obstack_init): Move to...
	* coretypes.h: ...here.
	* lto-wrapper.c: Include coretypes.h instead of defaults.h.
	* pretty-print.c (obstack_chunk_alloc, obstack_chunk_free): Delete.
	* genattr.c: Include read-md.h.
	* genattrtab.c: Likewise.
	* genconditions.c: Likewise.
	* genemit.c: Likewise.
	* genextract.c: Likewise.
	* genflags.c: Likewise.
	* genoutput.c: Likewise.
	* genpreds.c: Likewise.
	* genrecog.c: Likewise.
	* rtl.h (read_skip_spaces, copy_rtx_ptr_loc, print_rtx_ptr_loc)
	(join_c_conditions, print_c_condition, read_rtx_filename)
	(read_rtx_lineno): Move to read-md.h.
	* read-rtl.c: Include read-md.h.
	(ptr_loc, string_obstack, ptr_locs, ptr_loc_obstack)
	(joined_conditions, joined_conditions_obstack, read_rtx_lineno)
	(read_rtx_filename, fatal_with_file_and_line, fatal_expected_char)
	(leading_ptr_hash, leading_ptr_eq_p, set_rtx_ptr_loc, get_rtx_ptr_loc)
	(copy_rtx_ptr_loc, print_rtx_ptr_loc, join_c_conditions)
	(print_c_condition, read_skip_spaces, read_escape, read_quoted_string)
	(read_braced_string, read_string): Move to read-md.c.
	(read_rtx): Move some initialization to init_md_reader and call
	init_md_reader here.
	* gensupport.h (message_with_line, n_comma_elts, scan_comma_elt):
	Move to read-md.h.
	* gensupport.c: Include read-md.h.
	(message_with_line, n_comma_elts, scan_comma_elt): Move to
	read-md.c.
	* read-md.h, read-md.c: New files.

From-SVN: r160570