Rename the JIT function Default() to InterpreterFallback(). Communicates intent way better in terms of telling the reader what's going on.

Also did some minor cleanup in functions that used Default (though this is almost purely whitespace)

- Windows (Builds)
- OSX (Builds)
- Linux (Untested - Though it should build if OSX builds)
- Android (Untested - If anyone could test it would be awesome)