[TIMOB-3218] iOS: Button height:'auto' does not respond

If you set a button height to 'auto', it should adjust based on contents, similar to a label.

Test Code:

var win = Ti.UI.createWindow({backgroundColor:'#fff'});

var button = Titanium.UI.createButton({ 
width:100,
height:'auto', 
left:10,
top:50,
title:"This is my Button"
});

var label = Titanium.UI.createLabel({ 
width:100,
height:'auto', 
left:10,
top:100,
text:"This is my Label"
});

win.add(button);
win.add(label);

win.open();

Reference Ticket: http://developer.appcelerator.com/helpdesk/view/75281">http://developer.appcelerator.com/helpdesk/view/75281