Moved WORDS_BIGENDIAN macros to basetsd.h.
Fixed FILETIME definition for big-endian.

diff --git a/include/winbase.h b/include/winbase.h
index 3b44bc3..769bab0 100644
--- a/include/winbase.h
+++ b/include/winbase.h
@@ -202,8 +202,13 @@
 /* 64 bit number of 100 nanoseconds intervals since January 1, 1601 */
 typedef struct
 {
+#ifdef WORDS_BIGENDIAN
+  DWORD  dwHighDateTime;
+  DWORD  dwLowDateTime;
+#else
   DWORD  dwLowDateTime;
   DWORD  dwHighDateTime;
+#endif
 } FILETIME, *PFILETIME, *LPFILETIME;
 #endif /* _FILETIME_ */