[poky] Rename meta-demo layer to meta-dlna

[Darren Hart]

The meta-demo layer provides packages for rygel and mediatomb and 
supporting libraries. "meta-demo" was chosen for the Yocto Project 0.9 
launch event demo, but isn't a good name going forward. As the layer is 
still generally useful, perhaps "meta-dlna" would be a better name.

It does contain the basic NAS recipe as well, but I believe that could 
either construed as supporting the dlna layer, or moved to a more 
appropariate layer - core poky maybe?

Richard, could you rename meta-demo to meta-dlna ?

Thanks,

-- 
Darren Hart
Yocto Linux Kernel