Propose upstream change to duplicity so this module can be used with it

[Gu1]

https://code.launchpad.net/~bruno-poirier/duplicity/duplicity/+merge/243218

[Gu1]

Oh, sorry @adrien-delhorme, I saw too late about your own proposed merge for this. So I withdrew mine.
Both were really similar anyway.

Why make a separate backend just for HubiC though ? IMHO duplicity should have only one pyrax backend that can be configured to use any identity module and credential file.

[adrien-delhorme]

I shared your opinion about making a separate backend for hubic, but when I asked duplicity team (https://answers.launchpad.net/duplicity/+question/256130), Kenneth Loafman answered that it "make sense to make a new backend for Hubic. It would give better isolation.". So, why not.

My branch has just been merged this afternoon onto duplicity project!
And I'm currently working on a duplicity port for Synology DSM.