RabbitMQ has moved to a much tighter cycle of support, now that the
Erlang OTP team has also made clear their support policy is penultimate
+ current release only.
Now we have OTP24 in ports let's move to that because JIT.
- PATH leakage fixed
- linuxisms for /var/db/rabbitmq fixed
- rc.d works
- man pages use hier(7) paths