PR libfortran/26893
	* acinclude.m4 (LIBGFOR_WORKING_GFORTRAN): New check.
	* configure.ac: Add call to LIBGFOR_WORKING_GFORTRAN.
	* configure: Regenerate.
	* config.h.in: Regenerate because it was forgottent in the last
	commit.

Co-Authored-By: Tobias Burnus <burnus@net-b.de>

From-SVN: r120949