2007-08-24 Joseph Myers <joseph@codesourcery.com>

            Paul Brook  <paul@codesourcery.com>

	* remap.c: New.
	* as.h (remap_debug_filename, add_debug_prefix_map): Declare.
	* as.c (show_usage): Document --debug-prefix-map option.
	(parse_args): Handle --debug-prefix-map.
	* dwarf2dbg.c (out_file_list, out_debug_info): Remap debug paths.
	* stabs.c (stabs_generate_asm_file): Remap debug paths.
	* Makefile.am (GAS_CFILES): Add remap.c
	(GENERIC_OBJS): Add remap.o.
	Regenerate dependencies.
	* Makefile.in: Regenerate.
	* doc/as.texinfo (--debug-prefix-map): Document.