Driver and Open AIRE guidelines have mandatory metadata about accessRights and, if the item is embargoed, its end date. However, current OAI2 model does not expose real permissions (resourcePolicies) of items nor its embargo en date if available.
I propose to add this data to the XML as an extra "others" element.
This PR makes available resource policies data for each item in crosswalks/*.xsl stylesheets
For example, an embargoed item will look like