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/Preprocessor/ifdef-recover.c b/test/Preprocessor/ifdef-recover.c
index 7fad8c2..3fffcc0 100644
--- a/test/Preprocessor/ifdef-recover.c
+++ b/test/Preprocessor/ifdef-recover.c
@@ -1,4 +1,4 @@
-/* RUN: clang -E %s 2>&1 >/dev/null | grep error: | count 3
+/* RUN: clang-cc -E %s 2>&1 >/dev/null | grep error: | count 3
  */
 
 #ifdef