updated for version 7.4.497
Problem:    With some regexp patterns the NFA engine uses many states and
            becomes very slow.  To the user it looks like Vim freezes.
Solution:   When the number of states reaches a limit fall back to the old
            engine. (Christian Brabandt)
diff --git a/src/Makefile b/src/Makefile
index 64691a3..cfdca44 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1879,6 +1879,9 @@
 	cd testdir; $(MAKE) -f Makefile $(GUI_TESTTARGET) VIMPROG=../$(VIMTARGET) $(GUI_TESTARG) SCRIPTSOURCE=../$(SCRIPTSOURCE)
 	$(MAKE) -f Makefile unittest
 
+benchmark:
+	cd testdir; $(MAKE) -f Makefile benchmark VIMPROG=../$(VIMTARGET) SCRIPTSOURCE=../$(SCRIPTSOURCE)
+
 unittesttargets:
 	$(MAKE) -f Makefile $(UNITTEST_TARGETS)