packing program
http://www.7-zip.org/
7-Zip is free software distributed under the GNU LGPL.
mod versions
Do you
really think it's a good idea to make pretenders with v5.0, use a modified 5.0 named 5.1 for setting up the game and then maybe a real 5.1 in the future?
Eg. a unit with 2 shield could cause 2 checks for missile stopping on the client, while there was only 1 check on the server. Voila - inconsistent turns.
do we really need that?