[FNA] #147 undoing the overzealous for to foreach change i made in graphics/spritebatcher
[FNA] #147 tabbing and cleanup for ./BoundingBox to Curve
[FNA] #147 remaining cleanup for ./ BoundingBox to Curve
Merge pull request #185 from extrahotchilipowder/monogame-sdl2

[FNA] #147 tabbing and cleanup of ./BoundingBox to Curve, plus undo a for to foreach change in Graphics/SpriteBatcher