Inconsistent this.checked property value when triggering a click event on a checkbox

[ehynds]

I'm noticing that the reported this.checked property of a checkbox is reversed when the click event is manually trigger()'d, verses if you actually click on the checkbox.

not sure if this is a jQuery bug or just how javascript rolls. it appears as if the handler fires before the actual click event on the checkbox with trigger().

test case: ​http://jsfiddle.net/ehynds/Hgcut/

[dmethvin]

Dup of #3827.