Most of the graph handling is now done, and all of the recursive types (basically just file, tidy, and component) now correctly use the generation mechanisms in the transactions, instead of sticking them in their @children array. Now I just need to go through the rest of the tests and make sure everything passes.

git-svn-id: https://reductivelabs.com/svn/puppet/trunk@1901 980ebf18-57e1-0310-9a29-db15c13687c0