* lock passing between add_peer_to_torrent and return_peers_for_torrent is now avoided by providing a more general add_peer_to_torrent_and_return_peers function that can be used with NULL parameters to not return any peers (in sync case)
* in order to keep a fast overview how many torrents opentracker maintains, every mutex_bucket_unlock operation expects an additional integer parameter that tells ot_mutex.c how many torrents have been added or removed. A function mutex_get_torrent_count has been introduced.

The BIG refactoring [tm]. Too many changes to count them. If it doesn't suite you, revert to last version.

added a config file parser
added tracker id
changed WANT_CLOSED_TRACKER and WANT_BLACKLIST into WANT_ACCESS_WHITE and WANT_ACCESS_BLACK
changed WANT_TRACKER_SYNC to WANT_SYNC_BATCH and added WANT_SYNC_LIVE
added an option to switch off fullscrapes

cleaned up many internal hardcoded values, like PROTO_FLAG,

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

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

No one can get access to buckets now without locking them. Also split up the trackerlogic.c-monster in functional sub-units. HEADS UP: this code is untested and not considered stable.