This also enables ipv6-only setups.

ngircd would always use INADDR_ANY for outgoing connections; which might not be desirable. Added new [Server] option "Bind" to set source ip.

- New configuration option "MaxNickLength" to specify the allowed maximum length of user nick names. Note: must be unique in an IRC network! - Enhanced the IRC+ protocol to support an enhanced "server handshake" and enable server to recognice numeric 005 (ISUPPORT) and 376 (ENDOFMOTD). See doc/Protocol.txt for details.