[IRCServices Coding] Chanserv patch for reg chans only

[DeadNotBuried]

> Also, I can think of a pathological case where the +b *!*@* might be a
> problem.  It would show up if one oper joins an unregistered channel and
> idles, then a normal user tries to join and services sets the +b.  With
> some servers (unreal), this will prevent other opers from joining that
> channel, since opers can't break bans and they can't use chanserv to
> remove them, since the channel isn't registered.

on unreal 3.2 opers can get around the ban by inviting themselves into the
channel