Add tools/ to hold the slackpkg+ compatible package repository maintenance scripts and files. Thanks to AlienBob for providing gen_repos_files.sh.
Remove old package repository maintenance script and files as I'm moving to the new slackpkg+ compatible structure.
Remove TODO as I'm not going to maintain those packages anymore.
clusterssh: new package for Cluster SSH 3.28.
New package repository structure compatible with slackpkg+. Thanks to AlienBob for
  providing gen_repos_files.sh, which makes this possible and quite easy to
  maintain.