mkrelease.sh: use unwrapped message body to fix some commit messages
mkrelease.sh: use unwrapped message body to fix some commit messages

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