Log Message:
Update to 2.9.1:

2007/09/09: version 2.9.1 = tag release-2-9-1
6192: EDK: Use discovered client_ip when lowid

2007/09/05
6187: BT: Fix wrong file order of multifile torrents due to patch #6174

2007/09/01
6179: BT: Send correct downloaded amount to tracker when download completed
6174: BT: Encode non-UTF8 filenames using "encoding" or \ 
"codepage" data
      from .torrent if present

2007/08/31
6175: Yet another patch for share_scan_interval
- new default 30 minutes for newly created ini files
- still use 0 to disable
- hard-coded global minimum of 5 minutes, this updates old default 1 to 5
- automated options update, if update is needed (options_version <= 19) and
  share_scan_interval = 5 (because of new hard-coded minimum, which is
  processed earlier) its changed to new default of 30
6145: EDK: Update options description of max_connected_servers (Schlumpf)
6172: EDK: properly advertise and honour noviewshared tag (TripleM)

2007/08/23
6160: BT: Another fix for share_scan_interval
- Old hard-coded default was 300s, now with share_scan_interval its
  possible to use a minimum of 60s which produces high CPU load.
  This patch implements a minimum of 300s for the BT share_files timer.

2007/08/04
6128: New default for option messages_filter (unease)
6132: HTML: Fix group display in vd <num> for admin users
      view of other users files
6130: Change API for network_parse_url, support user group
6127: HTML: Display file_chunk_sizes/file_piece_size in vd <num>
6135: BT: Fix high CPU load when share_scan_interval = 0
      due to buggy patch #6049 (thx to darkman)