[AC-1030] Icon in actionBar on Android doesn't work with SDK 4.0.0RC2

<Alloy>
	<Window class="container">
		 <ActionBar id="actionbar" title="5.0.0 GA"  />
		<Label id="label" onClick="doClick">Hello, World</Label>
	</Window>
</Alloy>

".container": {
	backgroundColor:"white"
}

"Label": {
	width: Ti.UI.SIZE,
	height: Ti.UI.SIZE,
	color: "#000"
}

"#label": {
	font: {
		fontSize: 12
	}
}

"#actionbar": {
    icon: "/appicon.png",
    displayHomeAsUp: true,
   // backgroundImage: "/actionbackground.png"
}