rgevaert/activemq2deb#5 Support fpm iteration

Now requires both activemq version and an iteration of the package to be
created. Initially this may be 0, increment as necessary.

This patch also switches from using the Apache 'closer' cgi to EU direct
downloads; closer.cgi now requires a click-through so is no longer
script-friendly.
Merge pull request #6 from jmkgreen/iteration

Support fpm iteration to let us release new package versions