VATICAN CITY (Reuters) - Never one to shrink from criticism, Pope John Paul is again putting controversial figures on the road to sainthood, including Austria's last emperor and a mystic nun who inspired Mel Gibson's film on Christ's passion. With Sunday's ceremony in St Peter's Square, the ailing 84-year-old Roman Catholic leader will have beatified some 1,340 people, more than all his predecessors combined. The Pope will confer beatification -- the last step before Roman Catholic sainthood -- on five people on Sunday. The two most controversial could not have been more different. One was born in a wooden farmhouse...