Libvirt hard dependencies [2]

Hi, this is the second patch series for the hard dependencies of Libvirt. The only difference between this series and the previous one ist that the rootfiles of all build dependencies are moved into config/rootfiles/common. Everything should build now.

@Michael Tremer : I will send a patch series for dmidecode standalone because there are some patches which are recommended by the project for dmidecode 3. These patches would blow up this patch series to much.

Regards Jonatan