2010-08-17  Jack Howarth <howarth@bromo.med.uc.edu>

	* gcc.c (spec_function): Add remove-outfile.
	(remove_outfile_spec_function): New function.
	* config/darwin.h (LINK_SPEC): Add removal of
	-ldl, -lm and -lpthread.
	* invoke.texi (replace-outfile): Document.

From-SVN: r163305