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/Frontend/CacheTokens.cpp b/lib/Frontend/CacheTokens.cpp
index ae4cdb5..ee8c8aa 100644
--- a/lib/Frontend/CacheTokens.cpp
+++ b/lib/Frontend/CacheTokens.cpp
@@ -25,7 +25,7 @@
 #include "llvm/ADT/StringMap.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Path.h"
+#include "llvm/Support/Path.h"
 
 // FIXME: put this somewhere else?
 #ifndef S_ISDIR