'install -d' does not take a set of access settings as first numerical
argument. At least on MacOS (BSD), but according to the manpage
(https://linux.die.net/man/1/install) on Linux, an extradirectory with
the name '755' were created.
On Kubuntu 16.04.5 LTS with 'rpmbuild 4.12.0.1' and 'debbuild 18.10.3',
a few modifications are necessary to create installation packages from
the latest tarball.
1. Adding comments after %build as building is not
required in this case
2. Putting the %post and %postun sections after %clean
3. Adding to the %changelog
Andreas Scherer
Koustubh Sinkar
Martin Gondermann
Alexander Peyser
Bernhard Graf
Justin Zhang