Changed logging level of peermsg_serializer
Corrected how we call QuartzTorrent::bytesToHex
Improved Formatter size parsing to also handle speeds.
Added log rotation
Now Magnet allows callers to get original link text
Fixed two bugs in Metainfo transfer (BEP 9)

  1. When a torrent for which we have full info (i.e. a .torrent file)
     we don't start the timer that sends responses for requests for
     metainfo

  2. When sending an extended metainfo response with metainfo data
     the length was calculated wrong.