gnome-keyring should use DBus for discovery

[Havoc Pennington]

Thiago Macieira wrote:
> The question is: is this a linker feature that dbus-glib wants to depend 
> on? It works on ELF platforms, but I have no idea about non-ELF ones 
> (notably, MacOS X and Windows).
> 

Generally speaking projects I've been involved with (gtk, etc.) have 
avoided relying on symbol versioning, though of course these things are 
always open to reconsideration.

Havoc