Using site_node::get_package_url to check for mounted curriculum instances, now that it is implemented with an nsv of url keyed by package key. Lars added this back in mars and I hadn't noticed ...
merge changes on oacs-5-1 branch to head, changes between jcd-merge-20040420 and jcd-merge-5-1-20040517 were merged, head pre changes is jcd-merge-pre-20040517 and post is jcd-merge-post-20040517