[TIMOB-7842] Android: Ti.UI.TextField.return event gets fired twice

*Code*

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

var textField = Ti.UI.createTextField({
	color: '#336699',
    height: 50,
    top: 100,
    left: 100,
    width: 250,
    returnKeyType: Ti.UI.RETURNKEY_SEARCH
});

var counter = 0;
textField.addEventListener('return', function(e)
{
	Ti.API.info('This should only be printed once.');
	
	win.backgroundColor = (++counter % 2 == 0) ? 'red' : 'yellow';
});

win.add(textField);
win.open();

*Expected result* When you tap on the textfield and then click on the return key, the event listener should only be fired once. *Actual result* When you do the above, the event gets fired twice. *Note* -I tried it with TiSDK 1.8.1 and the latest master from github, both seem to have this issue. -When you comment out the line 'returnKeyType: Ti.UI.RETURNKEY_SEARCH', it seems to work fine and the event is only fired once. -I only seem to be able to produce this issue with some devices. Issue happens on a Nexus One (2.3.6), Samsung Exhibit 4G (2.3.3) and Droid Bionic (2.3.4). I don't seem to be able to reproduce this issue on a Samsung Sensation 4G (2.3.3).