title: How to disable a specific option in Jquery Autocomplete combox
body: <p>When I have simple drop down box</p>
  
  <pre><code>&lt;select id="fruits"&gt;
  &lt;option value="apple"&gt;Apple&lt;/option&gt;
  &lt;option value="orange"&gt;Orange&lt;/option&gt;
  &lt;option value="banana" disabled="true"&gt;Banana&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>The Banana Option is disabled in the drop down.</p>
  
  <p>When I tried to use Jquery Autocomplete Combo box</p>
  
  <pre><code>$( "#fruits" ).combobox();
  </code></pre>
  
  <p>The Autocomplete dropdown works fine, but the option Banana ( which has disabled option set ) is not disabled.</p>