Rename clang to clang-cc.

Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
diff --git a/clang/test/Sema/enum.c b/clang/test/Sema/enum.c
index dbc250a..adb9375 100644
--- a/clang/test/Sema/enum.c
+++ b/clang/test/Sema/enum.c
@@ -1,4 +1,4 @@
-// RUN: clang %s -fsyntax-only -verify -pedantic
+// RUN: clang-cc %s -fsyntax-only -verify -pedantic
 enum e {A, 
         B = 42LL << 32,        // expected-warning {{ISO C restricts enumerator values to range of 'int'}}
       C = -4, D = 12456 };