uTorrent 1.8.1 Beta 11882

- Feature: 2x faster hashing
- Feature: Open Containing Folder for Files tab
- Change: sort torrents without ETA after torrents with infinity
- Change: remove "Download Limited" behaviour
- Change: turn sparse files off by default, due to fragmentation issues
- Change: relax min_interval restriction on manual updates to 60 seconds if the last tracker request failed
- Change: store hash of the webui password instead of plaintext
- Fix: force non-sparse with preallocate on
- Fix: 'hostname not found' on NT4
- Fix: slow load with lots of torrents that point to a dead/missing drive
- Fix: Some checkboxes overlapping others in the connection section of preferences
- Fix: work around NOD32 IMON bug (HTTP 400)