Fixed up bugs in Recogn System - basics work now.

- added missing decrement to DataCount in rsmemcache::erase()
 - added missing note_event_locked() in rstickevent ... can now use previous tick info,
 - revamped recogn scheduling. on demand rather than periodic. new function recogn_schedule().
 - deferred loading of pgpIdList for pgphashes, until we know it will be needed.



git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5-gxs_finale@6893 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/util/rstickevent.cc

@@ -80,6 +80,7 @@ void	RsTickEvent::tick_events()
 			mEvents.erase(it);
 
 			count_adjust_locked(event_type, -1);
+			note_event_locked(event_type);
 		}
 	}