[mythtv] UPnP and directory structure support

[David Blain]

> I've had a chance to have a good look through the source code, it all
seems
> pretty straight forward but I was hoping someone could point me to a
reference
> on the uPnP AV specifications, assume that's what we're using.
> I'd just like to get a bit more information on the difference between
items,
> containers and keys. It would also be handy to know what can and can't be
used
> for node ids and other things.
> 

The DLNA spec must be purchased to look at it, but the upnp spec is freely
available at:

http://upnp.org/sdcps-and-certification/standards/sdcps/

We currently implement a subset of Mediaserver:1 spec.

David.