Implement variable timeout
Hardcode handshake bytes
Log tweaks

more sync in PartialPiece

Linting dep-ann: Added @Deprecated annotations in i2psnark, i2ptunnel, ministreaming, routerconsole, streaming

   - Return partial piece to coordinator after reject
   - Fix tracking of downloaded portion of piece after reject
   - Send reject on receipt of bad request
   - Mark piece unrequested after receiving bad data, so it
     will be requested again, but not from the same peer
   - Fix NPE in Request constructor on error
   - Fix stuck before completion due to reject handling (ticket #1633)

untested

 - Support arbitrary location for torrent data. Save location in
   per-torrent config file. TODO: Fix torrent browse pages
   (ticket #1028)
 - Enhance idle shutdown message
 - Javadocs

   - Fix (again) partial piece avoidance for seeds
   - Fix several partial piece (temp file) leaks,
     some uncovered by previous rarest-first fixes, some in end game
   - Don't lose all DHT peers if we stop quickly (backport from update branch)
   - Explore a kbucket if it's less than 3/4 full (backport from update branch)

   - Reduce TrackerClient threads
   - Reduce delay between peer adds for faster startup
   - Thread the announces and reduce timeout when stopping

- Change DHT from option bit to extension message
- Add DHT start/stop code
- Add UI for DHT enabling
- Add raw datagram protocol type and use for response port

   - Store received chunks in temp files
   - Don't allocate from heap for unneeded chunks
   - Remove peer count restriction for torrents with large pieces
   - Use priorities and rarest calculations to sort partials
   - Preserve p parameter in clear messages link

Handle announce URLs with parameters correctly

- Better BEValue.toString()

(most of the following got missed in the last checkin)
- Fix about 9 NPEs
- Fix numwant in magnet mode
- Send metadata size in extension handshake
- Open trackers are primary if we don't have primary trackers
- Add missing break in port message handling
- Increase max msg size to account for metadata msg
- Remember magnets across restarts
- Drop peers w/o extensions if we need metainfo
- Fix DATA messages
- Fix tracker transition to non-magnet
- Fix infohash for non-magnet
- Fix up peer transition to non-magnet
- More logging

- Record the metadata bandwidth
- More null announce handling
- Callbacks for got MetaInfo event
- Cleanups

      - Fix NPE and other partials bugs
      - More extension message stubbing
      - Log tweaks

      - Drop queued outbound requests when choked
      - Redo some data structures and locking to hopefully prevent deadlock
      - Memory reduction part 3: Return partial pieces to PeerCoordinator when choked

                in preparation for more improvements

      - Prevent dup requests during end game
        (ticket 331 - thanks sponge and Oct!)

      - Defer piece loading until required
      - Stub out Extension message support

      - Limit number of parallel requests of a single piece when in the end game
      - Shorten and weight the speed tracker so the display is more
        reflective of current speed

- Make sure lastRequest is null when it should be
- Logging tweaks