Version 6.0 Released

Written for Déjà Dup by Michael Terry on 2009-01-20

* Allow restoring from any backup time point, not just the most recent
* Allow backing up to a Windows partition
* Clean up any leftover backend files from aborted previous runs
* Don't have scheduled backup start while a manual backup is happening
* Don't hang when non-UTF-8 characters appear in filenames
* Fix a bug with local folder selection when not using the file dialog
* Be more forceful about killing duplicity subprocesses, to avoid orphaned ones
* New Galician and German translations