Allow compilation with mingw64 albeit with warnings due to lack of

%llx/%llu.

	* grub-core/gnulib/msvc-inval.c: Use __cdecl rather than cdecl.
	* grub-core/lib/posix_wrap/wchar.h: Define wint_t.
	* grub-core/lib/posix_wrap/wctype.h: Define wctype_t.
	* include/grub/osdep/hostfile_windows.h: Don't define fseeko/ftello
	on mingw64.
	* include/grub/types.h: Allow sizeof (long) != sizeof (void *).

include/grub/osdep/hostfile_windows.h

@@ -64,6 +64,12 @@ enum grub_util_fd_open_flags_t
     GRUB_UTIL_FD_O_SYNC = 0,
   };
 
+#if defined (__MINGW32__) && !defined (__MINGW64__)
+
+#define fseeko fseeko64
+
+#endif
+
 LPTSTR
 grub_util_utf8_to_tchar (const char *in);
 char *
@@ -73,9 +79,6 @@ grub_util_tchar_to_utf8 (LPCTSTR in);
 
 int fsync (int fno);
 
-#define fseeko fseeko64
-#define ftello ftello64
-
 #endif
 
 #endif