Commit changes original made on the oacs-5-1 branch: adds a proc, get_mapped_trees_from_object_list, which is much more efficient than making many calls to get_mapped_trees. Once again, I'm reminded of the importance of not untabifying files.
add child_sum to the datasource from category_tree::get_multirow, add example adp for presentation of the tree, document a few of the fields in the datasource