Bug#599884: speed-dreams: changing back from ITP to RFP

[Matthew Fennell <matthew.robert.fennell@gmail.com>]

retitle 599884 RFP: speed-dreams -- Open source motorsport simulation
noowner 599884
thanks

I'm reverting this back to an RFP, as the copyright and license information for
some files is difficult to establish.

Additionally, a lot of the art in the game makes use of the Free Art License.
As far as I understand, this license is not unambiguously DFSG-compatible.

>From a technical perspective, packaging this project was very easy, so I hope
this will not dissuade someone else from picking up this package if they are
interested.