[packagekit] set backend name in pk_backend_set_name

[Richard Hughes]

On Wed, 2008-04-02 at 17:32 +0200, Stefan Haas wrote:
> ** (lt-packagekitd:7350): CRITICAL **: pk_backend_build_library_path:
> assertion `backend->priv->name != NULL' failed
> (at least with the zypp and dummy backend)

I think I've fixed this in a better way in
4d1e6a7558bed4969d1dbbd75225d8a03096ff14

Thanks for the heads up.

Richard.