[SCM] faad2/master: Set release as UNRELEASED. Current release hasn't been released yet.

[Fabian Greffrath]

> Should this have been uploaded? I don't see a 2.7-8 release in either
> Debian or Ubuntu.

It's not yet uploaded, but I consider it ready. All our patches have been
applied upstream, with the exception of one I think.

 - Fabian