Make sure that callers kicked from queue because of joinempty and...

 Make sure that callers kicked from queue because of joinempty and leavewhenempty have an event logged with regard to the reason for their departure. #6559 (Corydon76) 



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@24566 65c4cc65-6c06-0410-ace0-fbb531ad65f3