Java presence client update

[Phillips, Matthew]

Hi all,

I've used some of the time over the last few days (while no one's been
looking too closely at what I'm working on ;) to beef up the Java presence
implementation.  The updates are mainly extensions to the UI components (you
can now add particular users as well as groups to presence "contacts",
change your custom properties, etc) but there are a few fixes and tweaks to
the backend components also. I've put an updated JAR at
ftp://203.5.217.35/pub/presence.jar, which will also run as standalone
client as before.  I've also integrated these components into a (pre alpha)
version of Sticker and am hoping to do a 2.1.0 release in the near future.

Cheers,

Matthew.