Commits

Joe Groff committed 0b9b9986e35
CoreGraphics overlay: Make most CGPoint/Size/Rect operations transparent (again). Expose constructors, ==, and other operators so they can be inlined down to their underlying C struct operations. Add overlays for CG{Point,Rect,Size}Zero and CGAffineTransformIdentity as well so we avoid having to load from the opaque extern storage of the C constants. Recommits r28387 and addresses rdar://problem/20888179, now that the previous commit worked around rdar://problem/20902115. Swift SVN r28527