Fixed a bug with JOIN allowing multiple joins on the same channel, added LIST, USERHOST, and USERS commands, allowed more characters in channel names (_!-), and limited visibility of channels with +p and/or +s modes in LIST and WHOIS output


git-svn-id: svn://svn.devux.org/rubircd/trunk@46 ee5ec8d9-9059-491c-9dba-d8e79e715dbe