1. It's generally preferred that ports rc.d files use REQUIRE: LOGIN
unless there is a good reason not to. However this service runs as an
unprivileged user, which makes that a requirement.
2. The default variable assignments have to come after load_rc_config to
3. _flags should not be reproduced in command_args
4. The start and restart methods were superfluous, instead use
wait_for_pids in the _stop method.
Submitted by: me
Approved by: maintainer