[packagekit] Dropping libtar

[Richard Hughes]

On Wed, 2008-08-20 at 19:50 +0200, Sebastian Heinlein wrote:
> libtar seems to be a dead and unmaintained project. Not something to
> build a package managing tool on. [1] I am not sure if Canonical wants
> to include this piece of software in its main archive of supported
> software.
> 
> libarchive seems to be a better solution. [2]

I've switched PackageKit to using libarchive in git master. I've tested
building with and without libarchive-devel installed.

Richard.