This method does the heavy work of the
Yaf_Dispatcher. It take a request object.
The dispatch process has three distinct events:
Routing
Dispatching
Response
Routing takes place exactly once, using the values in the request object
when Yaf_Dispatcher::dispatch() is called. Dispatching takes place in a loop; a request may
either indicate multiple actions to dispatch, or the controller or a plugin
may reset the request object to force additional actions to dispatch(see
Yaf_Plugin_Abstract. When all is done, the
Yaf_Dispatcher returns a response.
