Comparison

Quite some changes, to: - Small logging fix for s2smanager - Send a stream error if an incoming s2s connection is to an unrecognised hostname (fixes #11) - init_xmlhandlers now takes a table of callbacks (includes changes to net/xmpp*_listener for this) - Move sending of unavailable presence to where it should be, sessionmanager.destroy_session - Fix sending of stream errors to wrong connection