This timeout was not enough on some machines.

--- Merging r128270 into '.':
U    MultiSource/Applications/lemon/Makefile

llvm-svn: 128294
diff --git a/MultiSource/Applications/lemon/Makefile b/MultiSource/Applications/lemon/Makefile
index d73ed33..f0ba897 100644
--- a/MultiSource/Applications/lemon/Makefile
+++ b/MultiSource/Applications/lemon/Makefile
@@ -7,7 +7,7 @@
 HASH_PROGRAM_OUTPUT = 1
 
 # With a Debug+Asserts build may time out if the default limit is used.
-RUNTIMELIMIT := 750
+RUNTIMELIMIT := 1500
 
 include $(LEVEL)/Makefile.config