Import py34-attic-0.13 as wip/py-attic.

Attic is a deduplicating backup program. The main goal of Attic is
to provide an efficient and secure way to backup data. The data
deduplication technique used makes Attic suitable for daily backups
since only changes are stored.

TODO:
Package finished, but no NetBSD support, so I can't test it.
Import it if it works for you, or if you can add/ignore xattr
support for NetBSD. -- wiz 20140810
+ py-attic.