Make filtering out OP_ClientUpdate less aggressive to fix spinning toons

If we are too aggressive filtering out the same position packets it's
possible for toons to continue to spin indefinitely. Instead of
just not sending the update when the position is the same we keep a
tally of how many we get and stop once a threshold (6) is reached.

zone/client.h

@@ -1447,6 +1447,9 @@ private:
 	Timer position_timer;
 	uint8 position_timer_counter;
 
+	// this is used to try to cut back on position update reflections
+	int position_update_same_count;
+
 	PTimerList p_timers; //persistent timers
 	Timer hpupdate_timer;
 	Timer camp_timer;