Spunk should block on connect/authenticate

[parabuzzle]

Currently, when you connect and authenticate to an IRC server, it returns after the message has been sent. In most cases this is ok unless you're trying to connect to a slower irc server (freenode) and you want to join a room that requires nickserv registration. In this case, you end up sending the join command before authenticate is finished and you are (silently) denied access to that room.