Add ICS networking support
Submitted by Robert Ancell
glChess needs to be able to play network games.
The obvious protocol is the Internet Chess Server protocol (ICS). Unfortunately this is not well documented so the protocol will be quite fuzzy. The first server to work with should be the Free Internet Chess Server (FICS) at freechess.org.
For LAN play glChess can provide a cut-down ICS server it advertises using Avahi (Zeroconf/Bonjour).
The join game dialog should contain a list of Internet servers (e.g. FICS) and any locally detected servers.
Version: git master