[TIMOB-5177] Android: scaled images in ImageView are stretched if aspect ratio of view doesn't match source image.

Given the attached large photo "julia.jpg" and the following app.js:

Titanium.UI.setBackgroundColor('#000');
var win = Titanium.UI.createWindow({
	title : 'Test',
	backgroundColor : '#000',
	exitOnClose : true
});

var img = Ti.UI.createImageView({
	image : "julia.jpg",
	top : 0,
	left : 0,
	width : "300dp",
	height : "100dp",
	backgroundColor : "red"
});

win.add(img);
win.open();

The aspect ratio of the image (w/h) is 0.75. The aspect ratio of the created ImageView is 3.0. If you run the app in iOS, you'll see that iOS makes a "best fit" for image, being sure to display all of it *and* at the correct aspect ratio. Our Android implementation, on the other hand, will stretch to fit the entirety of the ImageView, meaning it forces the 0.75 aspect ratio photo into a 3.0 aspect ratio, causing it to stretch horizontally and look bad.