[DefineButtonTag] Disable names of the buttons state

The state sprites are not supposed to be added as named dynamic
properties of the button DisplayObjectContainer.
[TextField] Add restrict and displayAsPassword stubs
[Stage] Add framerate, align, quality, full screen related properties

align, quality and full screen are stubs
[XMLList] setVariableByMultiname: handle non-XML nodes and indexes
[toplevel] Runtime construction of functions is not allowed
[AccessibilityProperties] Add properties
[Video] Stub deblocking and smoothing properties
[LoaderContext] checkPolicyFile property