gcc.c (default_compilers): Pass "-o %g.s" to cc1 for headers even if -fdump-ada-spec is passed but not if...

	* gcc.c (default_compilers): Pass "-o %g.s" to cc1 for headers even if
	-fdump-ada-spec is passed but not if -fsyntax-only is.
cp/
	* lang-specs.h: Pass "-o %g.s" to cc1plus for headers even if
	-fdump-ada-spec is passed.

From-SVN: r224755