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/include-directive2.c b/test/Preprocessor/include-directive2.c
index 8309b45..785b77c 100644
--- a/test/Preprocessor/include-directive2.c
+++ b/test/Preprocessor/include-directive2.c
@@ -1,4 +1,4 @@
-// RUN: clang -Eonly %s 
+// RUN: clang-cc -Eonly %s 
 #  define HEADER <float.h>
 
 #  include HEADER