In order to get docs both as man pages and as info docs for reading in emacs, I decided to try converting a couple man pages to pod. There turned out to a painful amount of infrastructure needed to get this working, so I didn't get much done on the notmuch-emacs docs. I think all the infrastructure is in place at this point. I'm probably not going to do much more work into the actual docs until I get some feedback on the basic approach; it's clear that the autoconverted pod files need a bit of tidying. As far as build depends, this needs only perl for the basic docs (pod2man is part of perl since a while). To build the info docs needs pod2texi and makinfo, which are part of recent texinfo releases.