Merge System into Support.

llvm-svn: 120297
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 08ced99..e3279c2 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -23,7 +23,7 @@
 #include "clang/Basic/SourceManager.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/Support/MemoryBuffer.h"
-#include "llvm/System/Path.h"
+#include "llvm/Support/Path.h"
 using namespace clang;
 
 // Append a #define line to Buf for Macro.  Macro should be of the form XXX,