1. stats for added and removed torrents
2. stats for start and stopped events from peers

this should help to detect DoS attacks and is useful for
profiling

A simple script that fills up opentracker with some peers, if -DWANT_IP_FROM_QUERY_STRING is specifierd

Drop ot_{byte,word,dword} and use uint{8,16,32}_t, also move run time keeping and FULLSCRAPE stderr output to ot_stats

Finally split up the opentracker.c cruft into ot_http.c, ot_accesslist.c and just leave in socket handling and parameter parsing