7198519: Broken build, hotspot-rt win USE_PRECOMPILED_HEADER=0

Summary: Uncommented out include for sys/stat.h and deleted include statements that were commented out.
Reviewed-by: coleenp, acorn, dholmes
Contributed-by: harold.seigel@oracle.com

src/os/windows/vm/jvm_windows.h

 /*
- * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -61,8 +61,6 @@ typedef struct _MODULEINFO {
 
 typedef int socklen_t;
 
-// #include "jni.h"
-
 #define JNI_ONLOAD_SYMBOLS      {"_JNI_OnLoad@8", "JNI_OnLoad"}
 #define JNI_ONUNLOAD_SYMBOLS    {"_JNI_OnUnload@8", "JNI_OnUnload"}
 #define JVM_ONLOAD_SYMBOLS      {"_JVM_OnLoad@12", "JVM_OnLoad"}
@@ -108,10 +106,7 @@ JVM_GetThreadInterruptEvent();
  * File I/O
  */
 
-// #include <sys/types.h>
-// #include <sys/stat.h>
-// #include <fcntl.h>
-// #include <errno.h>
+#include <sys/stat.h>
 
 /* O Flags */