Bug#119911: ITP: alephone - marathon engine for data games

[Alexandre Detiste <alexandre.detiste@gmail.com>]

I don't think anyone else will come up with an alternative marathon engine anyday.

So please: one alephone source package that builds one alephone binary package
that includes three .desktop files (for a starter, the extra levels can be added later)
and the launcher if needed.

Keep it simple.

Please no virtual packages like for quake, better follow iortcw as an example.

GDP will not provide things like the one provided by src:quake, as there's
no way to update these after the local GDP package has been manually built.

Greets,

Alexandre