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/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index fafe1d2..8d27bf5 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -27,8 +27,8 @@
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/Format.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Host.h"
-#include "llvm/System/Process.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Process.h"
 
 #include "InputInfo.h"
 #include "ToolChains.h"