RJK's patch to enable PuTTY's X forwarding to connect to local X

servers using Unix sockets (on Unix only, obviously!).

[originally from svn r4263]

unix/uxsftp.c

@@ -34,6 +34,8 @@ void platform_get_x11_auth(char *display, int *protocol,
     /* Do nothing, therefore no auth. */
 }
 
+const char platform_x11_best_transport[] = "unix";
+
 /*
  * Default settings that are specific to PSFTP.
  */