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/docs/tools/Makefile b/docs/tools/Makefile
index 91bc447..4cffc45 100644
--- a/docs/tools/Makefile
+++ b/docs/tools/Makefile
@@ -37,8 +37,8 @@
 else
 
 # Otherwise, if not in BUILD_FOR_WEBSITE mode, use the project info.
-LEVEL := ../../../..
-include $(LEVEL)/Makefile.common
+CLANG_LEVEL := ../..
+include $(CLANG_LEVEL)/Makefile
 
 CLANG_VERSION := $(shell cat $(PROJ_SRC_DIR)/../../VER)