hud.rotation to work on child components

[dpharaoh]

Right now, if you rotate a container hud, its children do not also get rotated.
It would be fantastic if this would also happen, as otherwise there is no way to rotate the children correctly without a tremendous amount of math.

I was wanting to use a hud template on the bottom of the screen, and one on the top, upside down (for head to head play on an iDevice)