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/Frontend/rewrite-macros.c b/test/Frontend/rewrite-macros.c
index deb54f4..32e02ec 100644
--- a/test/Frontend/rewrite-macros.c
+++ b/test/Frontend/rewrite-macros.c
@@ -1,4 +1,4 @@
-// RUN: clang -verify --rewrite-macros -o %t %s &&
+// RUN: clang-cc -verify --rewrite-macros -o %t %s &&
 
 #define A(a,b) a ## b