Rename clang to clang-cc.

Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
diff --git a/clang/test/SemaCXX/nested-name-spec.cpp b/clang/test/SemaCXX/nested-name-spec.cpp
index 4b4d435..7aaa991 100644
--- a/clang/test/SemaCXX/nested-name-spec.cpp
+++ b/clang/test/SemaCXX/nested-name-spec.cpp
@@ -1,4 +1,4 @@
-// RUN: clang -fsyntax-only -std=c++98 -verify %s 
+// RUN: clang-cc -fsyntax-only -std=c++98 -verify %s 
 namespace A {
   struct C {
     static int cx;