Makefile: Switch Clang Makefiles to always include the top-level Clang Makefile.
 - This eliminates most dependencies on how Clang is installed relative to LLVM.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105637 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Makefile b/test/Makefile
index c3b3eab..5bb50c6 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -1,5 +1,5 @@
-LEVEL = ../../..
-include $(LEVEL)/Makefile.common
+CLANG_LEVEL := ..
+include $(CLANG_LEVEL)/Makefile
 
 # Test in all immediate subdirectories if unset.
 ifdef TESTSUITE