intermediate commit => revised class cofpacket_queue
revised class cofpacketqueues (former cofpacketqueuelist)
cofpacket_queues => add_pqueue() / set_pqueue() => initialize cofpacket_queue object with port_no and queue_id
new tests: for classes cofqueue_prop and cofqueue_props
new tests: for classes cofpacket_queue and cofpacket_queues
disabled debug output in test cofpacketqueues_test
cofpacketqueue.h => removed deprecated dependency to coflist.h