ROOT: mkrelease.sh: news: exclude history reachable from non-linear release tags
ROOT: mkrelease.sh: news: exclude history reachable from non-linear release tags

swesterfeld/beast,swesterfeld/beast,tim-janik/beast,swesterfeld/beast,GNOME/beast,tim-janik/beast,tim-janik/beast,swesterfeld/beast,swesterfeld/beast,GNOME/beast,GNOME/beast,tim-janik/beast,GNOME/beast,swesterfeld/beast,GNOME/beast,tim-janik/beast,GNOME/beast,GNOME/beast,swesterfeld/beast,tim-janik/beast,tim-janik/beast