8162546: change hidden options -Xdebug to --debug, -XshouldStop to --should-stop, and -diags to --diags
Reviewed-by: mcimadamore

8161019: javac, fold formatter options
Reviewed-by: mcimadamore, jjg

8010387: Javac crashes when diagnostic mentions anonymous inner class' type variables
Summary: Rich formatter doesn't preprocess supertypes of an anonymous inner class
Reviewed-by: jjg