[XPlug-updates] UT2003 support

[Chris W. <ch...@fr...>]

While I don't currrently indent to add anything new to XPlug myself, I have figured
out how to make it query ut2 servers.  They decided to make ut2 use the game
port+10 instead of game port+1 like ut and unreal1 do.  So to make XPlug show UT2
server info, tell XPlug the port is the game port+9.  eg.: If you running the
default port 7777, tell XPlug you are using 7786.  You will not be able to launch
the game this way, but at least there is server info.