[ecf-dev] Further work on org.eclipse.ecf.presence API

[Scott Lewis <slewis@xxxxxxxxxxxxx>]

Hi Folks,

I've been continuing work on the presence API (plugin: 
org.eclipse.ecf.presence).  I've deprecated and then removed a few 
interfaces and classes, in order to reorganize things.  Specifically, 
I've created a 'roster manager' concept 
(org.eclipse.ecf.presence.roster.IRosterManager), and this manager 
object is an intermediary between the presence container adapter entry 
point (IPresenceContainerAdapter) and the use of the roster. 

The structure of the roster change and update listeners has been 
simplified, in order to allow the easy creation and customization of 
roster user interfaces.  As an example of this new structure, see 
org.eclipse.ecf.presence.ui.MultiRosterView and MultiRosterContentProvider.

Also, I've refactored and cleaned up the source in the xmpp provider 
org.eclipse.ecf.provider.xmpp.*. 

Thanks,

Scott