For now, scale everything up to point size.
For now, scale everything up to point size.

We'll eventually want an IOSPlatform option to use the native resolution or do this auto-scaling,
so that games that want to use the full Retina resolution can do so.

threerings/playn,threerings/playn,threerings/playn,threerings/playn,ruslansennov/playn,ruslansennov/playn,ruslansennov/playn