don't sort packets alphabetically by default, improve readability

examples/src/DisExamples/PduReceiverTerminalLog.txt

 run:
 DisExamples.PduReceiver started...
-received DIS PDU: pduType 15 edu.nps.moves.dis.AcknowledgePdu, protocolFamily 5 SimulationManagementFamilyPdu
-received DIS PDU: pduType 16 edu.nps.moves.dis.ActionRequestPdu, protocolFamily 5 SimulationManagementFamilyPdu
-received DIS PDU: pduType  4 edu.nps.moves.dis.CollisionPdu, protocolFamily 1 EntityInformationFamilyPdu
-received DIS PDU: pduType 22 edu.nps.moves.dis.CommentPdu, protocolFamily 5 SimulationManagementFamilyPdu
-received DIS PDU: pduType 11 edu.nps.moves.dis.CreateEntityPdu, protocolFamily 5 SimulationManagementFamilyPdu
-received DIS PDU: pduType  3 edu.nps.moves.dis.DetonationPdu, protocolFamily 2 WarfareFamilyPdu
 received DIS PDU: pduType  1 edu.nps.moves.dis.EntityStatePdu, protocolFamily 1 EntityInformationFamilyPdu
 received DIS PDU: pduType  2 edu.nps.moves.dis.FirePdu, protocolFamily 2 WarfareFamilyPdu
-received DIS PDU: pduType 12 edu.nps.moves.dis.RemoveEntityPdu, protocolFamily 5 SimulationManagementFamilyPdu
-received DIS PDU: pduType  9 edu.nps.moves.dis.RepairCompletePdu, protocolFamily 3 LogisticsFamilyPdu
-received DIS PDU: pduType 10 edu.nps.moves.dis.RepairResponsePdu, protocolFamily 3 LogisticsFamilyPdu
-received DIS PDU: pduType  8 edu.nps.moves.dis.ResupplyCancelPdu, protocolFamily 3 LogisticsFamilyPdu
+received DIS PDU: pduType  3 edu.nps.moves.dis.DetonationPdu, protocolFamily 2 WarfareFamilyPdu
+received DIS PDU: pduType  4 edu.nps.moves.dis.CollisionPdu, protocolFamily 1 EntityInformationFamilyPdu
+received DIS PDU: pduType  5 edu.nps.moves.dis.ServiceRequestPdu, protocolFamily 3 LogisticsFamilyPdu
 received DIS PDU: pduType  6 edu.nps.moves.dis.ResupplyOfferPdu, protocolFamily 3 LogisticsFamilyPdu
 received packet but pdu is null, packet.getData().length=1500, error...
-received DIS PDU: pduType  5 edu.nps.moves.dis.ServiceRequestPdu, protocolFamily 3 LogisticsFamilyPdu
+received DIS PDU: pduType  8 edu.nps.moves.dis.ResupplyCancelPdu, protocolFamily 3 LogisticsFamilyPdu
+received DIS PDU: pduType  9 edu.nps.moves.dis.RepairCompletePdu, protocolFamily 3 LogisticsFamilyPdu
+received DIS PDU: pduType 10 edu.nps.moves.dis.RepairResponsePdu, protocolFamily 3 LogisticsFamilyPdu
+received DIS PDU: pduType 11 edu.nps.moves.dis.CreateEntityPdu, protocolFamily 5 SimulationManagementFamilyPdu
+received DIS PDU: pduType 12 edu.nps.moves.dis.RemoveEntityPdu, protocolFamily 5 SimulationManagementFamilyPdu
 received DIS PDU: pduType 13 edu.nps.moves.dis.StartResumePdu, protocolFamily 5 SimulationManagementFamilyPdu
 received DIS PDU: pduType 14 edu.nps.moves.dis.StopFreezePdu, protocolFamily 5 SimulationManagementFamilyPdu
+received DIS PDU: pduType 15 edu.nps.moves.dis.AcknowledgePdu, protocolFamily 5 SimulationManagementFamilyPdu
+received DIS PDU: pduType 16 edu.nps.moves.dis.ActionRequestPdu, protocolFamily 5 SimulationManagementFamilyPdu
+received DIS PDU: pduType 22 edu.nps.moves.dis.CommentPdu, protocolFamily 5 SimulationManagementFamilyPdu