Now empty 'highlevel' packages strictly depend on the same versions of files.
        These are mariadb-server, mariadb-client, mariadb-test

per-file comments:
  debian/dist/Debian/control
MDEV-4266 Server upgrade via apt-get install does not work.
        dependencies on the current version added.
  debian/dist/Ubuntu/control
MDEV-4266 Server upgrade via apt-get install does not work.
        dependencies on the current version added.