small. Patch by Josef Drexler.
* Added 'view.persistance' command that makes downloads inserted into
that view persist across sessions. Only call on user-created views.
* Added 'ratio.*' commands that call the 'group.seeding.ratio.*'
equivalents.
git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@1080 e378c898-3ddf-0310-93e7-cc216c733640