win32 changes. now including windows.h with WIN32_LEAN_AND_MEAN

to avoid including some stuff we don't want (like winsock).

platform/CMSWindowsScreen.h

@@ -4,6 +4,7 @@
 #include "CMutex.h"
 #include "IClipboard.h"
 #include "BasicTypes.h"
+#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 
 class CString;