Break out FlowRanvar into its own class
Set substreams correctly for independent replications
Change names of sourced files
Break up psize into pktsize and hdrsize
Rename on_off_server to logging_app_client, attach on_off_sender to $tcp_server
Rename src to on_off_server to make it more readable
Use flowid only for arrays shared by both TCP and UDP connections
Get rid of StatCollector; doesn't exist anymore
Use the new traffic generator; code borrowed from remy2.tcl's finish method.