replaced print_goals_ref hook by print_current_goals_fn and result_error_fn;
replaced print_goals_ref hook by print_current_goals_fn and
result_error_fn;

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle