Rename clang to clang-cc.

Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
diff --git a/clang/test/CodeGen/const-init.c b/clang/test/CodeGen/const-init.c
index 30fc755..e7b83a3 100644
--- a/clang/test/CodeGen/const-init.c
+++ b/clang/test/CodeGen/const-init.c
@@ -1,4 +1,4 @@
-// RUN: clang -arch i386 -verify -emit-llvm -o %t %s &&
+// RUN: clang-cc -arch i386 -verify -emit-llvm -o %t %s &&
 
 #include <stdint.h>