Fix test suite, following bf00b9f49c

testsuite/tools/Makefile.am

@@ -32,7 +32,7 @@ check.local:
 	do \
 	  $(SANEDESC) -m $$mode -s $(srcdir)/data >$$mode.res ;\
 	  if diff -I "[ 012][0-9]:[0-5][0-9]:[0-6][0-9] 20[0-9][0-9]" \
-	          -I "sane-backends 1\.0\.[0-9]\+\(git\)\?$$" \
+	          -I "sane-backends 1\.0\.[0-9]\+\([-0-9a-fgdirty]\+\)\?$$" \
 	       $(srcdir)/data/$$mode.ref $$mode.res ; \
 	  then \
 		echo "PASS: sane-desc -m $$mode -s $(srcdir)/data"; \