Ok. For any interested parties, I've added a release-tools repo to git.k-c.org. You may see it here:

http://git.koha-community.org/gitweb/?p=release-tools.git;a=summary

The two tools I currently use are there. They are very hackish, so beware. I will gladly accept patches introducing improvements or additional tools.

Kind Regards,
Chris
Koha 3.2.x/3.4.x/3.6.x Release Maintainer