Debian packaging

I am currently trying to include our projects in a continous integration setup and having to compile essentia for each test run is very tedious. Hence, I want to revive the stale debian packaging situation.

Coming from the [Arch Linux side of things](https://aur.archlinux.org/packages/essentia/) I wanted to keep everything as simple as possible so I went for a simple build script.

I basically ripped everything out that was there and added one single and simple `control` file and a `build.sh` script. Now this is obviously not the nicest way to go about this but I have not the slightest clue about `waf` and how one could integrate such a feature into it.

It would be nice if somebody could give me a hint as to how that could be done (or might do it him/her self). Alternatively, this feature could be split into a separate repository altogether as a simple bash script there won't look weird in the `waf`environment you're using.