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/vector.c b/test/CodeGen/vector.c
index 528afdf..c92d2ca 100644
--- a/test/CodeGen/vector.c
+++ b/test/CodeGen/vector.c
@@ -1,4 +1,4 @@
-// RUN: clang -emit-llvm %s -o -
+// RUN: clang-cc -emit-llvm %s -o -
 typedef short __v4hi __attribute__ ((__vector_size__ (8)));
 
 void f()