Set suspected non-standard Chess960 check options

Set suspected non-standard Chess960 check options

Any check-type option containing the substring "960" or "frc" in their
name will be set automatically when UCI2WB is run with the -f option.
They will also be reported to the GUI, but always as having default
setting 'true', no matter what their original default setting was,
to reflect the new reality. So the potential damage this heuristic can
do is limited to altereing the default.