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/Sema/void_arg.c b/test/Sema/void_arg.c
index d0571fc..6799146 100644
--- a/test/Sema/void_arg.c
+++ b/test/Sema/void_arg.c
@@ -1,4 +1,4 @@
-/* RUN: clang -fsyntax-only %s -verify
+/* RUN: clang-cc -fsyntax-only %s -verify
  */
 
 typedef void Void;