Merge System into Support.

llvm-svn: 120297
diff --git a/clang/lib/Rewrite/RewriteMacros.cpp b/clang/lib/Rewrite/RewriteMacros.cpp
index 910fa6b..2efa694 100644
--- a/clang/lib/Rewrite/RewriteMacros.cpp
+++ b/clang/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>