[Graphlab-devel] Event system updated

[Omid A. <omi...@gm...>]

Into CVS:

- BaseVertex and BaseEdge "equals" overload removed to be container friendl=
y.
- Package graphlab.library.animation renamed to graphlab.library.event
- Class AnimationEvent renamed to Event and moved to upper package.
- Class EventDispatcher moved to upper package.
- library.event.EdgeRequest and library.event.VertexRequest added.
- IMPORTANT: EventDispatcher interface changed for easier use of
EdgeRequest and VertexRequest. "dispatchEvent" now returns the same
event (filled event). Why ? to be used like this:

dispatcher.dispatchEvent(new VertexRequest(graph)).getVertex();

//getVertex now returns the vertex which is filled by the dispatcher.