Working some on the export/collect problem. It actually works now, but there are not yet sufficient tests for it, so I will leave the bug open until we have got the new work in place. I also added a "rails" feature, so I do not have to keep testing whether ActiveRecord is defined.

git-svn-id: https://reductivelabs.com/svn/puppet/trunk@1911 980ebf18-57e1-0310-9a29-db15c13687c0