Set the endpoint after when Salesforce returns the URL after successful login()

def _setEndpoint(self, location):
    '''
    Set the endpoint after when Salesforce returns the URL after successful login()
    '''
    # suds 0.3.7+ supports multiple wsdl services, but breaks setlocation :(
    # see https://fedorahosted.org/suds/ticket/261
    try:
      self._sforce.set_options(location = location)
    except:
      self._sforce.wsdl.service.setlocation(location)

    self._location = location