Releases other than by the package maintainer

[Ian Jackson <ian@chiark.chu.cam.ac.uk>]

There are a couple of circumstances when a new version of a package
needs to be released by someone other than the usual maintainer:

 * Architecture-specific patches which need to be integrated.
 * Maintainer is away or can't do it for some other reason.
 * Urgent security and other fixes.

I propose that we should mandate:
 (a) a broad description of when you should and when you shouldn't do
     this, and how not to tread on the usual maintainer's toes.
 (b) that the non-usual-maintainer releases should use a particular
     revision format: eg, hello-1.3-8 would become hello-1.3-8.1.

Ian.