In this file we declare lot of globals and source lot of code, and
basically do only that, which makes this check less useful.

If for some reason, user wants to skip a version or two, this will
override version bumping in vbump_* and some checks new and tag
creation in release_*.

Hopefully this is now according to GNU standards.

DESTDIR[1] can be now set to specify the root in situations such as when
building a package or installing to a chrooted environment.

If not specified by environment variable (eg. by make) or in mkit.ini,
the default value is governed by MKIT_DEFAULT_DESTDIR, which defaults to
"/".

  [1]: https://www.gnu.org/prep/standards/html_node/DESTDIR.html