Update ruby-net-irc package to 0.0.9.

2009-10-11  SATOH Hiroh <cho45@lowreal.net>

* [new]
Implemented Server#sessions which returns all sessions connected to
the server.
* Released 0.0.9

2009-08-08  SATOH Hiroh <cho45@lowreal.net>

* [bug]:
Fixed to work on ruby1.9.1 (now can send iso-2022-jp)
* [new]
Implemented Message#ctcps returns embedded all ctcp messages (drry).
* Released 0.0.8

(taca)