Eventually I'd like to automate this so that one or the other of these
files is canonical and the other is generated from it. Until then, add
this check to the release process to avoid a skewed release being
shipped.
We actually want this version to be incremented by the commits that
extend the interface. So the release process really is not to just
verify two things (NEWS and libnotmuch version), then run "make
VERSION=x.y release", and send the mail. Quite nice.
The entire "make sure the code you want is in place" thing is part of
a larger release process that we don't document here at all. Instead,
we just focus here on the mechanics of pushing things out once the
larger process has determined the code is ready.
And the fewer steps there are, the better, (for making the
release-process as painless as possible and for avoiding any
mistakes).
We've now changed to using "git describe" to automatically report a
version number that changes with every git commit. So we no longer
need to manually update anything in the Makefile during the release
process.