Switch devel to Fedora F-13 until we branch RPMFusion F-13

[Kevin Kofler]

Jarod Wilson wrote:
> Fwiw, I just twiddled the mock and plague configs on my builder so
> that the devel target builds against F13...

Your builder still seems to be dragging in x86_64 needsign packages into 
i686 builds. :-( See:
http://buildsys.rpmfusion.org/logs/fedora-development-rpmfusion_free/6505-
kdenlive-0.7.7.1-1.fc13/i686/job.log
http://buildsys.rpmfusion.org/logs/fedora-development-rpmfusion_free/6505-
kdenlive-0.7.7.1-1.fc13/i686/root.log

        Kevin Kofler