dijit.form.DateTextBox does not fire onChange when selecting today's date

[ben hockey]

the simplest way to demonstrate this is to use dijit/tests/form/test_DateTextBox.html and change the first DateTextBox? so that it has no value when it is created.

<input id="local" data-dojo-type="dijit.form.DateTextBox"
	data-dojo-props='name:"noDOMvalue", type:"text", onMouseEnter:eventHandler,
	onMouseLeave:eventHandler,
	onKeyDown:eventHandler,
	onChange:function(val){ dojo.byId("oc1").value = "" + val; }
'/>

select today's date from the dropdown and you'll see onChange: "not fired yet!"

[ben hockey]

fyi - this is a regression from 1.5 behavior

[Douglas Hays]

seems to be caused by [23332]

[Douglas Hays]

(In [24249]) Fixes #12628. Move _set code that checks for invalid dates to compare so it'll be used by onChange.

[Douglas Hays]

(In [24250]) Refs #12628. Backport [24249] to 1.6.1.