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/exprs.c b/test/Sema/exprs.c
index 8bf42f7..d348d9e 100644
--- a/test/Sema/exprs.c
+++ b/test/Sema/exprs.c
@@ -1,4 +1,4 @@
-// RUN: clang %s -verify -pedantic -fsyntax-only
+// RUN: clang-cc %s -verify -pedantic -fsyntax-only
 
 // PR1966
 _Complex double test1() {