7.1a patch for Mingw32

[Ron Aaron]

It doesn't compile under Mingw32 unless gui_w32.c is patched:

--- gui_w32.c.orig      Sat May 05 04:24:58 2007
+++ gui_w32.c   Tue May 08 09:01:11 2007
@@ -232,6 +232,7 @@
     LPARAM     lParam;
 } NMTTDISPINFO_NEW;

+#ifndef __MINGW32__
 #ifndef LPNMTTDISPINFO
 typedef struct tagNMTTDISPINFOA {
     NMHDR      hdr;
@@ -251,6 +252,7 @@
     UINT       uFlags;
     LPARAM     lParam;
 } NMTTDISPINFOW, *LPNMTTDISPINFOW;
+#endif
 #endif

 #include <poppack.h>