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/Sema/arg-scope.c b/test/Sema/arg-scope.c
index fc2bb70..c1cc7e1 100644
--- a/test/Sema/arg-scope.c
+++ b/test/Sema/arg-scope.c
@@ -1,4 +1,4 @@
-// RUN: clang -fsyntax-only -verify %s
+// RUN: clang-cc -fsyntax-only -verify %s
 int aa(int b, int x[sizeof b]) {}
 
 void foo(int i, int A[i]) {}