* src/ejabberd_sm.erl: Added checks to work correctly when
mod_offline not loaded
* src/ejabberd_c2s.erl: Likewise
* src/mod_register.erl: Added support for users removal
* src/ejabberd_auth.erl: Added function to remove user only if
specified password correct
* src/mod_irc/mod_irc_connection.erl: Fixed bug with changing
availability status, added processing of "QUIT" message
SVN Revision: 80
* src/mod_offline.erl: Now all offline packets processed in
separate queue to avoid delaying of other packets transmission.
Also all packets in queue processed in one transaction.
SVN Revision: 72
