XflTexture stores a set of filters to render with
SwfTexture - adds XflTexture.filters to display object before rendering.  Renders to target size directly from vector renderer (Issue #32), unless dObj contains filters.  If dObj contains filters, uses full visual bounds to avoid cropping of filter pixels, and scales to target size from bitmapdata of scale 1 vector render.
XflKeyframe parses filters and stores them in a static lookup table indexed by KeyframeMold.  Note: parsing AdjustColorFilter introduces an external dependency on fl.motion.AdjustColor
XflLibrary propagates filters from MovieMold KeyframeMolds down to leaf XflTexture objects