Rename clang to clang-cc.

Tests and drivers updated, still need to shuffle dirs.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67602 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/expr_liveness.c b/test/Preprocessor/expr_liveness.c
index d9e5d7c..3d1e25e 100644
--- a/test/Preprocessor/expr_liveness.c
+++ b/test/Preprocessor/expr_liveness.c
@@ -1,5 +1,5 @@
-/* RUN: clang -E %s -DNO_ERRORS -Werror -Wundef &&
-   RUN: not clang -E %s
+/* RUN: clang-cc -E %s -DNO_ERRORS -Werror -Wundef &&
+   RUN: not clang-cc -E %s
  */
 
 #ifdef NO_ERRORS