[patch][python] Add BusConnection.watch_name_owner() and use it to improve SignalMatch behaviour

[John (J5) Palmieri]

On Tue, 2007-05-01 at 12:25 +0100, Simon McVittie wrote:
> On Mon, 30 Apr 2007 at 23:27:29 +0100, Simon McVittie wrote:
> > Some bugs I should fix tomorrow, thinking about it:
> >  * add the NameOwnerChanged match rule before calling GetNameOwner, to
> >    avoid a race
> >  * call GetNameOwner asynchronously
> > 
> > I'll add a method watch_name_owner which does both of the above.
> 
> ... for which see attached.
> 

Looks good