BSE: merge arg parsing setup into initialize_with_argv()
BSE: merge arg parsing setup into initialize_with_argv()

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