[packagekit] Improved pkt tool

[Tom Parker]

Ken VanDine wrote:
> nice.  Even better would be to create a PackageKit-python api, really
> making it easy to create external apps to interface with PackageKit.

Would probably just be a thin layer around the dbus API (possibly adding 
a couple of tiny utility functions, like one to do a search for a 
particular named package, and then calling install with whatever full 
package_id comes back that matches that package name), but I could put 
one together if there's demand.

Tom