Revert "[msf] Rename Msf to MSF."

This reverts commit 4d1557ffac41e079bcb1abbcf04f512474dcd6fe.

llvm-svn: 277194

llvm/lib/DebugInfo/CodeView/ModuleSubstreamVisitor.cpp

@@ -8,8 +8,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/DebugInfo/CodeView/ModuleSubstreamVisitor.h"
-#include "llvm/DebugInfo/MSF/StreamReader.h"
-#include "llvm/DebugInfo/MSF/StreamRef.h"
+#include "llvm/DebugInfo/Msf/StreamReader.h"
+#include "llvm/DebugInfo/Msf/StreamRef.h"
 
 using namespace llvm;
 using namespace llvm::codeview;