title: NSURL Authentication when server does not present a challenge
body: <p>I am in a situation where I need to send authentication (basic HTTP Authentication) to a server but the server does not send me a challenge first.  This has been tracked down to be a duplicate of the wget switch --auth-no-challenge.  My problem is, I do not see any way to get NSURL to do this.</p>
  
  <p>I have implemented basic authentication in my NSURLConnection delegate but the <code>-connection: didReceiveAuthenticationChallenge:</code> method is not getting called.  </p>
  
  <p>Is there any way to force this call or to embed the authentication information for this strange situation?</p>