Using lp:udd beyond its original purpose

[Martin Pool]

> There are two big changes that aren't necessary for us, but would help a lot:
>  1. Decouple lp:udd from the package-import.canonical.com production deployment
>  2. Split the package scanning and the branch importing parts of
> lp:udd into separate projects

That sounds good to me, especially #1.  I would much rather have the
splitting merged back upstream than to have the tree forked.

-- 
Martin