Debian Policy 3.8.3.0

We'd accumulated quite a few fixes in the Debian Policy Git repository and it seemed like it was about time for another release. I didn't get to everything that I wanted to, and I'm not sure we're really keeping ahead of the pace of new bugs, but it's nice to see a slightly faster release cycle.

The summary of changes from 3.8.2 is:

Last spun 2013-07-01 from thread modified 2013-01-04