acinclude.m4 (GLIBCXX_CONFIGURE): Delete gcc_version logic.

	* acinclude.m4 (GLIBCXX_CONFIGURE): Delete gcc_version logic.
	(GLIBCXX_EXPORT_INSTALL_INFO): Adjust quotation so ${gcc_version}
	is expanded by the Makefiles, not by configure.
	* fragment.am: Set gcc_version.
	* libmath/Makefile.am: Likewise.
	* configure, Makefile.in, include/Makefile.in, libmath/Makefile.in
	* libsupc++/Makefile.in, po/Makefile.in, src/Makefile.in
	* testsuite/Makefile.in: Regenerate.

From-SVN: r96814