[packagekit] Python bindings part 2

[Aidan Skinner]

Hi PackageKitters,

I've added a few more functions to the python wrapper Martin Pitt wrote
(http://lists.freedesktop.org/archives/packagekit/2008-July/003262.html)
and pushed it to a git repo at http://aidan.skinner.me.uk/packagekit.git
on the pkwrap branch.

It's still all synchronous and stuff, I haven't needed async yet (but I
probably will later). 

- Aidan