re PR driver/50876 (unrecognized command line option '-Zmultiply_defined suppress regressions for lto.exp on x86_64-apple-darwin11)

2010-10-28  Richard Guenther  <rguenther@suse.de>

	PR driver/50876
	* lto-wrapper.c (get_options_from_collect_gcc_options):
	Properly count arguments.
	(run_gcc): Use an obstack to collect argv, properly separate
	switches and their arguments.

From-SVN: r180608