post_upgrade()
{
  #newver="$1"
  oldver="$2"
  if [[ $(vercmp "$oldver" 2015) -le 0 ]]
  then
    cat <<'MSG'
==> WARNING: The settings directory has been moved from /var/tmp/relight to
             /etc/relight.  To migrate your old settings simply run

                 mv -t /etc /var/tmp/relight

             as root.
MSG
  fi
}