[MovieClip] Support the second paramter in gotoAnd*

Bug #1102710
Move decRef to be the last step in smartref assignment operators

Do decRef as the last step, because it may cause the (Nullable)Ref
object to be deleted, if the the decReffed object owns the
(Nullable)Ref. One place where this may happen is Timer::tickFence.
[flashnet] Implement navigateToURL

TODO: standalone mode, POST requests
[security] A parameter was being ignored
[NetStream] Do not call decodeNextFrame if the decoder is not valid
[TextField] Add properties. Get more values from DefineEditText.
Draw borders for TextField