* final.c (rest_of_clean_state): Use %m in errors instead of
	strerror (errno).
	* gengtype.c (read_input_list, close_output_files): Use xstrerror
	instead of strerror.
	* toplev.c (process_options): Use %m in errors instead of strerror
	(errno).
	* tree-dump.c (dump_begin): Use %m in errors instead of strerror
	(errno).

fortran:
	* cpp.c (gfc_cpp_init_0): Use xstrerror instead of strerror.
	* module.c (write_char, gfc_dump_module, gfc_use_module): Use
	xstrerror instead of strerror.

lto:
	* lto-coff.c (coff_errmsg): Remove.
	(lto_coff_begin_section_with_type, lto_obj_append_data): Use %m in
	errors instead of coff_errmsg (-1).
	* lto-macho.c (mach_o_errmsg): Remove.
	(lto_obj_begin_section, lto_obj_append_data): Use %m in errors
	instead of mach_o_errmsg (-1).
	* lto.c (read_cgraph_and_symbols): Use %m in errors instead of
	xstrerror (errno).

From-SVN: r159969