title: Cant override jQuery UI autocomplete renderItem method multiple times
body: <p>It overrides properly in the first autocomplete found, but do nothing with the rest. 
  Instead it loads the original _renderitem method that you can see at <a href="https://github.com/jquery/jquery-ui/blob/master/ui/jquery.ui.autocomplete.js#L449">https://github.com/jquery/jquery-ui/blob/master/ui/jquery.ui.autocomplete.js#L449</a>. </p>
  
  <pre><code>$(".someClassWithMultipleItemsOnDOM").autocomplete({
          delay:500,
          minLength:2,
          source:path"
          .....   
  }).data( "autocomplete" )._renderItem = function( ul, item ) {
  </code></pre>
  
  <p>thanks in advance</p>