Packaging Aquilon

This is the code we have discussed and tested today at the workshop.

I have cleaned the history as much as possible. Feedback appreciated.

Please note, this doesn't pull the PostgreSQL dependencies, and it doesn't build the man pages. We have to discuss how to automate the aquilon-postgresql metapackage, and @stdweird needs to verify that it's possible to build the man pages on SL6 (today it has failed).