ROME, Oct 30 (Reuters) - World Bank President David Malpass on Saturday called on leaders of the Group of 20 rich nations to speed up work on debt restructuring for low-income countries, including a freeze on debt payments and mandatory participation of private creditors. Malpass told G20 leaders meeting in Rome that progress on dealing with the debt of the poorest countries had stalled and urgent efforts were needed to jumpstart the process. Reporting by Andrea Shalal, editing by Gavin Jones