- With a Makefile instead of a shell script to make build files,
  it's easier to only redo the necessary parts.
- Do not bootstrap buildout in advance. This caused build failures on old
  dists when this was done with Python 2.7 (parts/buildout/site.py imported
  a module that does not exist on Python 2.6). Now everything can be prepared
  on a recent dist.
- Minimize list of build-deps. We don't need setuptools anymore.
  We also don't rely on system chrpath anymore because SLE_12 does not have it.
- Refactoring with upstream packaging.
- Debian: fix upgrade path from 're6stnet' package.
- Package re6st manpages and logrotate configuration.
- systemd integration on RPM-based dists.
- Fix shebang of OpenVPN/NetworkManager hooks.
- Do never ship *.py[co] files in packages. Remove them on uninstallation
  (not done yet for Arch).
- chrpath: Suse dists use RUNPATH instead of PATH
- Stop stripping ELF files.
- Greatly reduce size of packages by removing eggs/parts that were only useful
  during the build, like Perl.

TODO: integrate with osc working copy ?

For the record, here is an example to strip ELF files:

strip:
	cd $(DESTDIR)/$(TARGET) \
	&& s() { chmod u+w $$x && strip -v -R .comment -R .note "$$@" $$x; } \
	&& x=`find -type f -executable ! -name '*.so*' |xargs -r file | \
		sed -n 's/:.*ELF.*\(executable\|shared\).*//p'` && s \
	&& x=`find -type f -name '*.so*' |xargs -r file | \
		sed -n 's/:.*ELF.*shared.*//p'` && s --strip-unneeded