PR bootstrap/14760

	* configure.in: When computing baseargs, strip *all* copies of
	offending options.  Also, don't match/substitute the trailing space,
	so that this actually works when two similar options are separated by
	only one space.
	* configure: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@80474 138bc75d-0d04-0410-961f-82ee72b054a4