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/wchar.c b/test/Sema/wchar.c
index b7171fe..1637600 100644
--- a/test/Sema/wchar.c
+++ b/test/Sema/wchar.c
@@ -1,4 +1,4 @@
-// RUN: clang %s -fsyntax-only -verify 
+// RUN: clang-cc %s -fsyntax-only -verify 
 #include <wchar.h>
 
 int check_wchar_size[sizeof(*L"") == sizeof(wchar_t) ? 1 : -1];