Restore Graphite fuse-*.c testing

	* Makefile.tpl: Remove HOST_ISLVER.
	(HOST_EXPORTS): Remove ISLVER.
	* Makefile.in: Regenerate.
	gcc/
	* Makefile.in (site.exp): Remove "set ISLVER".
	gcc/testsuite/
	* gcc.dg/graphite/graphite.exp: Merge "fuse_files" into
	"opt_files".

From-SVN: r245483