Rename clang to clang-cc.

Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
diff --git a/clang/test/Sema/bitfield-layout.c b/clang/test/Sema/bitfield-layout.c
index 0ac5dd2..4405c80 100644
--- a/clang/test/Sema/bitfield-layout.c
+++ b/clang/test/Sema/bitfield-layout.c
@@ -1,4 +1,4 @@
-// RUN: clang %s -fsyntax-only -verify -triple=i686-apple-darwin9
+// RUN: clang-cc %s -fsyntax-only -verify -triple=i686-apple-darwin9
 
 #define CHECK_SIZE(kind, name, size) extern int name##1[sizeof(kind name) == size ? 1 : -1];
 #define CHECK_ALIGN(kind, name, size) extern int name##2[__alignof(kind name) == size ? 1 : -1];