title: UIView autoresizingMask problem
body: <p>In iPad. I have a UIViewController with another UIview inside it, at the bottom.</p>
  
  <pre><code> ____________
  |            |
  |            |
  |   UIView   |
  | Controller |
  |            |
  |            |
  |         X  |
   ------------
  </code></pre>
  
  <p>The UIView is the X.</p>
  
  <p>I define for it an autoresizingMask like this, on the viewDidLoad of the UIViewController</p>
  
  <pre><code>self.view.autoresizeSubviews = YES;
  
  // xView creation
  
  xView.autoresizingMask = UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleBottomMargin;
  </code></pre>
  
  <p>But this doesn't works, the xView rotates fine but out of the screen bounds on landscape.</p>
  
  <p>What I'm missing?</p>