This directory only host a dummy package, that contains only its
description but is associated to a .dep file listing all packages in
the matchbox set of packages. This allows an easy maintenance:
- to install all packages from the set run as root:
  slapt-get --install-set matchbox
- to install and possibly update all packages from the matchbox set run
  as root:
  slapt-get --install-set matchbox --reinstall
- To upgrade all installed packages including those from the matchbox
  set run as root:
  slapt-get --upgrade