Calling $(expr).empty() on an element who's first child is a form

fails to uncache/unbind that child's data/events. I think this problem can be attributed to the following method chain:

$.empty -> $.remove -> $.add -> $.makeArray

on line 1135 the filter for array-like parameters should possibly test for form elements, as they also have a length property. It seems like the current implementation creates an array of form fields, excluding the form itself.

Please see the attached file for verification.