My bintray.com/jmkgreen repository now has 5.10.0-2 package of ActiveMQ. The only change from the original release is that the init script now ensures the pid folder exists. This resolves the problem that on Ubuntu (possibly Debian and others) /run (and symlinked /var/run) are mounted as tmpfs thus on reboot the activemq pid folder disappears.
Those of us with puppet/other ensuring activemq is running will find this most helpful. The patch source is in github.com/jmkgreen under the active2deb fork. I've issued the original project maintainer a pull request. James