BSE: bsestorage: use Rapicorn::string_format() for bse_storage_printf()
BSE: bsestorage: use Rapicorn::string_format() for bse_storage_printf()

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