Removed the SDG XSD schema restriction requiring the use of at least 1 <gfe:locator> of <gfe:server> sub-element on the <gfe:pool> element. Also added a default Locator endpoint on localhost listening on the Locators default port of 10334 when no Locator or Server endpoints were specified, either by way of explicit use of the 'locators' or 'servers' attribute or a corresponding <gfe:locator> or <gfe:server> sub-element.