dojox.layout.FloatingPane doesn't mind children when destroying

[guest]

The floating pane won't destroy the child widgets it contains (by getting its content remotely).

Adding the following method

	,destroyRecursive : function() {
		this.inherited("destroyRecursive", arguments);
	}

and changing the call from "destroy" to "destroyRecursive" in close() seems to fix this:

	close: function(){
		// summary: close and destroy this widget
		if(!this.closable){ return; }
		dojo.unsubscribe(this._listener); 
		this.hide(dojo.hitch(this,"destroyRecursive")); 
	},

The children as well as the FP itself are destroyed and removed from the dijit.registry

[dante]

(In [11624]) fixes #5219 - destroy contents as well as pane on close. fixes #5231 - patch from BlueFire? allowing the child of a floatingpane to be a LayoutWidget? and size accordingly, and fixes #5232 - another patch from BlueFire? to make resize handle use a single 'rubberband' for virtual sizing.