[Piuparts-devel] switch from dpkg --get-selections to dpkg-query -W

[Andreas Beckmann]

taking the versions into account lets us handle e.g. some sid2experimental
tests that will require some downgrade to restore the reference chroot

Andreas Beckmann (6):
      p: factor out an apt_get_install method
      p: use apt_get_install() to remove + install packages at the same time
      p: prepare for tracking versions of installed packages
      p: use dpkg-query -W instead of dpkg --get-selections
      p: support pre-multiarch dpkg-query as well
      p: restore the package versions from the reference chroot