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/CodeGen/ext-vector.c b/test/CodeGen/ext-vector.c
index 0a57397..249142a 100644
--- a/test/CodeGen/ext-vector.c
+++ b/test/CodeGen/ext-vector.c
@@ -1,4 +1,4 @@
-// RUN: clang -emit-llvm %s -o %t
+// RUN: clang-cc -emit-llvm %s -o %t
 
 typedef __attribute__(( ext_vector_type(4) )) float float4;
 typedef __attribute__(( ext_vector_type(2) )) float float2;