[fprint] New subproject: fprint_demo

[Vasily Khoruzhick]

> Me again :)
>
> I just published some source code for a GTK+ app written in C to
> demonstrate and test libfprint.
>
> It's quite basic right now, only supports verification against a
> previously enrolled image, but I do have more features planned. It will
> probably become quite useful for development once I have added more
> functionality.
>
> http://www.reactivated.net/fprint/wiki/Fprint_demo
>
> There are no releases yet.
> Daniel

I think fprint_demo should support enrolling, it will be quite convenient and 
usefull to see quality of enrolled fingerprints :)

Regards
Vasily