Merge System into Support.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120297 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Rewrite/RewriteMacros.cpp b/lib/Rewrite/RewriteMacros.cpp
index 910fa6b..2efa694 100644
--- a/lib/Rewrite/RewriteMacros.cpp
+++ b/lib/Rewrite/RewriteMacros.cpp
@@ -17,7 +17,7 @@
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Basic/SourceManager.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Path.h"
+#include "llvm/Support/Path.h"
 #include "llvm/ADT/OwningPtr.h"
 #include <cstdio>