[TIMOB-11340] Android: Can't add menu items to ActionBar-style tab group

//
// create base UI tab and root window
//
var tg = Ti.UI.createTabGroup();
var win1 = Titanium.UI.createWindow({
	title : 'Tab 1',
	backgroundColor : '#fff',
	layout : 'vertical'
});

var label1 = Titanium.UI.createLabel({
	color : '#999',
	text : 'I am Window 1',
	font : {
		fontSize : 20,
		fontFamily : 'Helvetica Neue'
	},
	textAlign : 'center',
	width : 'auto'
});

var tf = Titanium.UI.createTextField({
	hintText : 'Hello',
	width : 300,
	color : 'white',
	backgroundColor: '#333',
});


win1.add(label1);
win1.add(tf);
if (Ti.Platform.name === 'android') {
	win1.addEventListener('open', function(e) {
		Ti.API.info("win1.activity is: " + win1.activity);
		Ti.API.info("Ti.Android.currentActivity is: " + Ti.Android.currentActivity);
		
		win1.activity.onCreateOptionsMenu = function(e) {
			var menu = e.menu;
			var menuItem = menu.add({
				title : "Item 1",
				showAsAction : Ti.Android.SHOW_AS_ACTION_WITH_TEXT
			});
			menuItem.icon = "KS_nav_ui.png";
			menuItem.addEventListener("click", function(e) {
				Ti.API.info("I was clicked");
			});
		};
	});
}

var tab1 = Ti.UI.createTab({
	title : 'Quarks',
	window : win1
});

tg.addTab(tab1);

var win2 = Titanium.UI.createWindow({
	title : 'Tab 2',
	backgroundColor : '#f33',
});

var tab2 = Ti.UI.createTab({
	title : 'Snoodles',
	window : win2
});

tg.addTab(tab2);
tg.open();

E/TiExceptionHandler( 9242): (main) [170,233] ----- Titanium Javascript Runtime Error -----
E/TiExceptionHandler( 9242): (main) [0,233] - In ti:/window.js:313,34
E/TiExceptionHandler( 9242): (main) [0,233] - Message: Uncaught TypeError: Cannot call method 'extend' of undefined
E/TiExceptionHandler( 9242): (main) [0,233] - Source: 			this.window._internalActivity.extend(this.cachedActivityProxy);