DBusConnection -> DBusGConnection woes

[Havoc Pennington]

Robert McQueen wrote:
> Yes it's reasonably guaranteed currently, but I meant that we add the
> API here as a way to lift people from the lower-level DBusConnection
> (which you pointed dbus-glib at manually) to a DBusGConnection (which
> you can export objects on and otherwise use normally).
> 

There's nothing wrong with having a g_connection_from_connection afaik - 
should not be any problem, as long as it's documented that you have to 
'setup with g main' if you created the connection yourself.

Havoc