really remove the #define stat.

include/portable.h.nt

@@ -36,8 +36,6 @@ is provided ``as is'' without express or implied warranty.
 #define strncasecmp	strnicmp
 #define strdup		_strdup
 
-#define stat		_stat
-
 /* define type for caddr_t */
 typedef char * caddr_t;