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/struct-compat.c b/test/Sema/struct-compat.c
index 489ff47..35d8fb1 100644
--- a/test/Sema/struct-compat.c
+++ b/test/Sema/struct-compat.c
@@ -1,4 +1,4 @@
-/* RUN: clang %s -fsyntax-only -pedantic -verify
+/* RUN: clang-cc %s -fsyntax-only -pedantic -verify
  */
 
 extern struct {int a;} x; // expected-note {{previous definition is here}}