Force references to an embedded package's admin or sitewide-admin pages to be referenced (relative to the embedding package's mount point) as admin/package-key or sitewide-admin/package-key. This nicely arranges all admin URLs in a composite package under ${mount-point}/admin, which among other things will cause the request processor to do the expected permission check. Backdoor access to the admin pages via URLs like ${mount-point}/package-key/admin or ${mount-point}/package-key/sitewide-admin is blocked, as the request processor won't do the expected permissions check for URLs of that form.,