title: Position view below action bar with overlay
body: <p>I would like to position a view below an action bar with <a href="http://wagagate.appspot.com/EfrpZdqgurlgZghyhorshu/http/reference/android/R.attr.html#windowActionBarOverlay" rel="noreferrer">overlay</a>. Is there a way of doing this via XML layout?</p>
  
  <p>I would like to avoid using constants as there are already at least <a href="https://stackoverflow.com/a/7181591/143378">4 possible values</a> and that number is likely to grow.</p>
  
  <p>Compatibility with <a href="http://actionbarsherlock.com/" rel="noreferrer">ActionBarSherlock</a> is a plus.</p>