Add 'make test' that runs tests and checks manpage version
Bugfix for checkinodes on /very/long/device/names

df /very/long/device/name wraps the output, which confuses our awk and
produces an error like

  [: 58: -lt: unexpected operator
Accept "min", "hour", "sec" suffixes for time units
extract-documentation.py: don't lose the first comment
Automate documentation updates (make update-docs)
Add make check-docs, include it in make test

Also run tests before uploading new source package to a PPA.  Hopefully
it'll avoid mistakes on my part.  Hm, I should also check for
uncommitted changes.
Consistent punctuation in documentation
Check git status before uploading package

Otherwise we'll git tag something other than what was actually released.