Moved all Win16 definitions out of the standard Windows headers.

diff --git a/include/local.h b/include/local.h
index 8aebd08..3b3f6f3 100644
--- a/include/local.h
+++ b/include/local.h
@@ -8,6 +8,7 @@
 #define __WINE_LOCAL_H
 
 #include "windef.h"
+#include "wine/windef16.h"
 
   /* These function are equivalent to the Local* API functions, */
   /* excepted that they need DS as the first parameter. This    */