SetFile -> SetFileInfo.
Update utils dep.
Merge pull request #1119 from ericsnowcurrently/backups-SetFileInfo

SetFile -> SetFileInfo

http://reviews.vapour.ws/r/415/
Add an Upload method to the backups API client.
Add tests.
Be explicit about the temp dir.
Stop using a temp file to upload the backup archive.
Add a test for CopyReader.
Get the API server address from API state.
Leave a note regarding SSH keys.
Upload the file to the SSH user's home directory.
Move SSH upload implementation into state/backups.
Keep low-level upload implementation details out of state/backups.
Make use of FilenamePrefix in cmd/juju/backups.
Drop the port number.
Add a bug # to a TODO comment.
Simplify copyReader.