[Authentication] Working on integrating new dbus gnome-keyring code

[Stef Walter]

I've reached the point where I've merged the gnome-keyring dbus-api
branch into master. It's not stable yet, and there's still a good deal
of work to do.

If you're tracking gnome-keyring master from git, this means that you'll
(soon) need to:

 * You need to install libgnome-keyring module from gnome git.
 * Be prepared for lots of instability.

As things progress a little further I'll announce more details about
these changes to a larger audience.

Cheers,

Stef