[Telepathy] Simplifying the requestotron

[Simon McVittie]

On Wed, 23 Jul 2008 at 16:31:16 +0300, Alberto Mardegan wrote:
> Do we even need the ChannelClosed signal? Who would have any use in 
> listening to it?

It's wrong to have a Channels property if we don't have
change-notification for it, IMO.

I can see a vague argument that we don't need a Channels property...
but we ought to have some equivalent of ListChannels(), surely?

    Simon