allow private access via indexed "shortcut" url
Currently you can read documents using the url http://server.com/metacat/metacat/docid.1.1. This only works for public documents. I understand it was originally intended to allow search engines to index the public metacat documents, but I find no reason why this url should not be able to perform access control just like the other url (docid=docid.1.1&action=read). They should behave identically. This will allow for more succinct urls to be sent between people and machines.