* Rewind & State config - remove the default option
* remove the savestate type of default, not that this is a breaking config change for anyone that had specifically set savestates to text
* remove BinaryStatesPreferred from IStatable and use config setting when starting movies from "Now" in record movie dialog
* remove BinaryStatesPreferred from cores
* make text savestates an extension method off of IStatable and an inteface ITextStatable it uses if the core implements it. This will allow cores to opt in to text states if desired
* make cores with actual text savestate impleemntations get ITextStatable, remove text state logic from cores that just have a binary as as text implementation
adelikat