Wait til we get the TIME START event to do connection setup. This will more
closely synch the sender/consumer startup. Support -N name option to uniquely identify the trafgen on a machine trafgen uses the name to further qualify event selection. Support -l logname option to turn on TG's per-packet logging. There is no NS interface to this right now. You would have to turn this on manually by restarting the trafgens and then restarting the event-sched to replay events. Turn on some debugging printfs for now til things have stablized a bit. The trafficconfig function in libsetup.pm currently redirect stdout/stderr to a file in /tmp.