I believe that this is no longer possible in the default interface - it was a potentially damaging process for your site. What you are looking for would be a custom (or invalid item) entry in the top menu of the site.
I do believe that this can be changed by creating a theme component that would determine a new, valid, menu item that could then be added to the top menu under settings.
I there a reason you need them there? You do have control over the header space for links: