I noticed that if I set an `editoptions` parameter to a column with `edittype:'checkbox'`, the value of the checkbox is not being set in the edit form. 

You can reproduce it even with an empty object as editoptions.

```
...
colModel: [
    {name: 'checked', index: 'checked', editable: true, edittype: 'checkbox', formatter: 'checkbox', editoptions:{}}
]
...

```

Try to select the first row and edit it in this [demo](http://jsfiddle.net/6Sceb/57/)

It appears to be a bug in jqgrid, but I haven't found any fix or workaround. Does anyone know one?

In my specific situation, I am using the editoptions to populate `dataEvents` for the input element, so I cannot remove it.