add Obnam backupEncrypted

This after I typoed an obnam setup and accidentially had a repo that was
backing up non-encrypted.
moving privdata to privdata.joey (for joeyconfig branch only)

This will be reverted on master. This way, my ongoing development on my
joeyconfig branch, including privdata changes, won't result in changes
being merged into the privdata/ dir on master. Such changes can cause
problems for other propellor users, who can get conflicts in their own
privdata when merging from master.
Merge branch 'joeyconfig'

Conflicts:
	privdata.joey/keyring.gpg
	privdata.joey/privdata.gpg
Revert "moving privdata to privdata.joey (for joeyconfig branch only)"

This reverts commit 269996e25d8f5481024f472a57debfd51dfcc703.