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/c89-2.c b/test/Sema/c89-2.c
index 128046f..723bd7c 100644
--- a/test/Sema/c89-2.c
+++ b/test/Sema/c89-2.c
@@ -1,4 +1,4 @@
-/* RUN: not clang %s -std=c89 -pedantic-errors
+/* RUN: not clang-cc %s -std=c89 -pedantic-errors
  */
 
 /* We can't put expected-warning lines on #if lines. */