updated manifest

Hmm, thats a point, but i think this requires the debs to have "matching versions" to the gems installed via gem.

We shouldn't mix up packages with custom installed gems. It could happen, the gem installed via gem is requireing a higher version than the deb can deliver. Afaik autoproj currently cannot handle this and install a required gem version via gem when the deb version is too old.

I'd favor installing gems via gem and not via deb. There is no point doubling package requirement definitions by ourselfes, when the gems have already defined them properly by the package maintainer (and not by us).