David Zeuthen authored Jun 30, 2009 and Cosimo Cecchi committed Jul 08, 2009

- Port everything to use _with_operation() variants of unmount/eject
   methods

 - This includes changing the NautilusFile a bit; see the patch
   for details

 - Add support for g_drive_can_start_degraded() so we offer
   to start (degraded) drives even when g_drive_can_start()
   returns FALSE

 - Also add support for new mountable::* attributes so we can
   have "Detect Media" items in the context menu when right-clicking
   mounts/volumes/drives in computer:/// and on the desktop