[TIMOB-2269] Background image stretches beyond its size on iPad

HD Ticket:
http://developer.appcelerator.com/helpdesk/view/52861">http://developer.appcelerator.com/helpdesk/view/52861

This code shows this behavior.

// this sets the background color of the master UIView (when there are no windows/tab groups on it) Titanium.UI.setBackgroundColor('#000');

// create tab group var tabGroup = Titanium.UI.createTabGroup();

// // create base UI tab and root window // var win1 = Titanium.UI.createWindow({

title:'Tab 1',
backgroundColor:'#fff',
backgroundImage:'winback.png',
url:'marcovid.js'

}); var tab1 = Titanium.UI.createTab({

icon:'KS_nav_views.png',
title:'Tab 1',
window:win1

});

var label1 = Titanium.UI.createLabel({

color:'#999',
text:'I am Window 1',
font:{fontSize:20,fontFamily:'Helvetica Neue'},
textAlign:'center',
width:'auto'

});

var right_btn = Ti.UI.createButton({

systemButton:Titanium.UI.iPhone.SystemButton.REFRESH

});

var right_vw = Ti.UI.createView({

});

right_vw.add(right_btn);
win1.rightNavButton = right_vw;
//win1.add(label1);

// // create controls tab and root window // var win2 = Titanium.UI.createWindow({

title:'Tab 2',
backgroundColor:'#fff'

}); var tab2 = Titanium.UI.createTab({

icon:'KS_nav_ui.png',
title:'Tab 2',
window:win2

});

var label2 = Titanium.UI.createLabel({

color:'#999',
text:'I am Window 2',
font:{fontSize:20,fontFamily:'Helvetica Neue'},
textAlign:'center',
width:'auto'

});

win2.add(label2);

// // add tabs // tabGroup.addTab(tab1);
tabGroup.addTab(tab2);

// open tab group tabGroup.open();