Add option to not send game version informations

This patch add option -i / --ignore-version in client_connect.cpp
which does not send game version information, cd owner and cd key
after SERVER_AUTHREQ_109 (like program bnbot).

When PvPGN server is configured to accept only war3 clients,
programs bnchat and bnstat could not connect to PvPGN server
without this patch.