debian packaging cleanup

[David Bremner]

Daniel Kahn Gillmor <dkg at fifthhorseman.net> writes:

> The following patch series should be fairly unobjectionable cleanup of
> the debian packaging for notmuch.
>
> Let me know if you think there are problems with any of it.
>

Not problems per se, but I would expect several of these things to be
documented in debian/changelog, including the standards version change.

d