* Replaced the constant kRosterPortName by a function returning that name
(we need different port names under BeOS and Haiku, and already at
libbe init time).
* The settings directory is obtained via find_directory() (critized by
Axel :-).
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10812 a95241bf-73f2-0310-859d-f6bbb57e9c96