Bugfix: fix return state codes for stop point

Bugfix: fix return state codes for stop point

For objects, if an object was not found and a stop point was reached, return approproate f_no_data codes.
For objects and content, if a stop state was reached during a quoted group, return appropriate f_unterminated_group codes.
For objects and content, if a stop state was reached during a valid pass, return appropriate f_none codes.