response from the stager.
        Adjust the stalling of clients so that they are not delayed for more than 5 min.
        Use consistently the stagerhost variable set in the xrd.cf.manager file when sending
        requests to the stager.
        Fix the deletion of expired user requests - this part of the code should be rarely used
        given that we now have a proper way of cleaning up requests from diconnected clients.
        Move the definition of ReqElements for the .cpp file.
        Drop the createifnotexists opaque tag since it's not used anymore.
        Refector some error messages and fix formatting.