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/CodeGenObjC/objc2-retain-codegen.m b/test/CodeGenObjC/objc2-retain-codegen.m
index b287249..d78bc36 100644
--- a/test/CodeGenObjC/objc2-retain-codegen.m
+++ b/test/CodeGenObjC/objc2-retain-codegen.m
@@ -1,4 +1,4 @@
-// RUN: clang -triple x86_64-unknown-unknown -fobjc-gc-only -emit-llvm -o %t %s
+// RUN: clang-cc -triple x86_64-unknown-unknown -fobjc-gc-only -emit-llvm -o %t %s
 
 @interface I0 {
   I0 *_f0;