dijit.WidgetSet - missing this._hash arg in every() and some()

[Les]

I added this._hash as the last argument in the callback call. This argument should also be added in some() to make the calls consistent with dojo.every() and dojo.some() and the rest of the WidgetSet? api.

every: function(func, thisObj){
	var x = 0, i;
	for(i in this._hash){
		if(!func.call(thisObj || dojo.global, this._hash[i], x++, this._hash)){
			return false; // Boolean
		}
	}
	return true; // Boolean 
}

[bill]

(In [20121]) Dijit performance optimizations, albeit at the cost of some code size increase, from Les Szklanny (CLA on file), thanks! Fixes #9899, #9900. !strict