Started on an implementation of Win64 for use on 64 bit platforms.

diff --git a/tsx11/ts_xf86vmode.c b/tsx11/ts_xf86vmode.c
index 21161e1..78cb208 100644
--- a/tsx11/ts_xf86vmode.c
+++ b/tsx11/ts_xf86vmode.c
@@ -11,7 +11,7 @@
 #include "windef.h"
 #ifdef HAVE_LIBXXF86VM
 #define XMD_H
-#define INT32 INT
+#include "basetsd.h"
 
 #include <X11/Xlib.h>
 #include <X11/extensions/xf86vmode.h>