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/mi_opt.c b/test/Preprocessor/mi_opt.c
index 96029dc..aa69e2b 100644
--- a/test/Preprocessor/mi_opt.c
+++ b/test/Preprocessor/mi_opt.c
@@ -1,4 +1,4 @@
-// RUN: not clang -fsyntax-only %s
+// RUN: not clang-cc -fsyntax-only %s
 // PR1900
 // This test should get a redefinition error from m_iopt.h: the MI opt 
 // shouldn't apply.