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/constant-strings.m b/test/CodeGenObjC/constant-strings.m
index 879f91a..d4fefd9 100644
--- a/test/CodeGenObjC/constant-strings.m
+++ b/test/CodeGenObjC/constant-strings.m
@@ -1,4 +1,4 @@
-// RUN: clang -fnext-runtime -emit-llvm -o %t %s
+// RUN: clang-cc -fnext-runtime -emit-llvm -o %t %s
 
 id a = @"Hello World!";