title: formatter select not working for FilterToolBar with jqGrid-v4.4.1
body: <p>I have been using jqGrid v4.0 and it's working perfectly, but since i upgraded to jqGrid v4.4.1, the FilterTolBar does not have the select fields visible anymore.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
  $(function() {
      var grid = $("#grid_container");
      grid.jqGrid({
          url:'index.php?getData=xml&amp;',
          datatype: "xml",
          colNames:['id', 'user','sid', 'Status'],
          colModel:[
              {name:'id', index:'id', width:150, hidden:true},
              {name:'user', index:'user', width:150 , stype:'select', editoptions:{value: "Jhon:Jhon;Adam:Adam"}, searchoptions:{sopt:['cn']}},
              {name:'sid', index:'sid', width:65 },
              {name:'status', index:'status', width:110 },
          ],
          rowNum:20,
          rowList:[10,20,100],
          pager:'#grid_pager',
          sortname: 'user',
          sortorder: 'desc',
          height:'100%'
      })
      .jqGrid('filterToolbar' ,{searchOnEnter : true});
  
  });
  </code></pre>
  
  <p></p>
  
  <p>Thank you for any suggestion.</p>