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/include-directive3.c b/test/Preprocessor/include-directive3.c
index 9e22d5d..2541301 100644
--- a/test/Preprocessor/include-directive3.c
+++ b/test/Preprocessor/include-directive3.c
@@ -1,3 +1,3 @@
-// RUN: clang -include file_to_include.h -E %s -fno-caret-diagnostics 2>&1 >/dev/null | grep 'file successfully included' | count 1
+// RUN: clang-cc -include file_to_include.h -E %s -fno-caret-diagnostics 2>&1 >/dev/null | grep 'file successfully included' | count 1
 // PR3464