BonoboPropertyBagClient

[Maciej Stachowiak <mjs eazel com>]

I noticed that BonoboPropertyBagClient inherits from GtkObject rather
than from BonoboObjectClient. Is there a reason for that? It requires
you to create a separate BonoboObjectClient object to be able to
query_interface() a property bag (or do other generic Bonobo::Unknown
stuff to it).

If this is an oversight, I'd like to fix it. If there is a good
reason, I'd like to know, so I can follow the same conventions in
CORBA code I write.

Thanks,

Maciej