* DigitalMan's int_to_ip() function -- thanks! Renamed functions.

* strftime()'s %e isn't standard, changed to %d
* N:Line flags now work as advertised, including checking against the local
  userbase in the case of QWK authorization (really only useful for vert)
* Stripped the 't' flag as there's no need for leaf servers to synchronize to
  our 'network' time, and all hub servers should be synchronizing with a
  trusted time source at least once per day.  Leaf servers have effectively
  no TS since the hubs have that responsibility.
* Changed 'operflags' to simply 'flags' since it's used for both an oper's
  O:Line flags and a server's N:Line flags.
* Changed 'x' O:Line flag to the more appropriate 'X', retained backwards
  compatibility.
* Fixed a bug with MODE involving braces, doh! (This fixes the +i bug.)
* User mode changes weren't propagating, ignore a umode +o from a leaf.
* Added some sanity checks on server-to-server NICK command.
* More general cleanup (adding 'var' to temporary variables, etc.)
* Collide nicknames inversely if a leaf is trying to collide forwards.
* Don't allow global KILL commands from a leaf.
* TOPIC was being sent to all channel members even if it was the same, which
  was redundant.  Fixed.
* TOPIC burst was sending server name as the topic creator instead of real nick
* IRCClient_server_chan_info() was sending TOPIC burst when it shouldnt've.
* IRCClient_server_chan_info() was specifying origin on SJOIN command, which is
  a nono.
* Check all incoming origins for sanity, if the origin nick doesn't exist, kill
  it globally to avoid a network desync.
* Store all IP addresses as IP's, and then convert them to integers on the fly.
  Changed "this.dec" to "this.ip" in client object.
* Check for Z:Lined clients while doing a scan for K:Lined clients, also.
* We weren't sending the integer IP as the correct argument on NICK, sigh.