RabbitMQ FreeBSD port

I was happy to see a FreeBSD port added for RabbitMQ, net/rabbitmq, although I found a couple problems with it: it doesn't start automatically when your machine or jail boots, and when building the rabbitmq-erlang-client, it errors out with:

src/amqp_channel.erl:28: can't find include lib "rabbitmq_server/include/rabbit.hrl"
src/amqp_channel.erl:29: can't find include lib "rabbitmq_server/include/rabbit_framing.hrl"

I worked on the port a bit, and submitted a bug report and patch, ports/127033, that fixes these problems.