NYT: As rain pounded Port-au-Prince on Sunday night, officials urged Haitians living in crowded tent camps to seek new shelter from an approaching storm. Tropical Storm Tomas churns through the Caribbean on a path that could batter Haiti with heavy rain and strong winds and pose a major threat to the one million homeless survivors of last January`s earthquakes. Over the weekend, the storm wrecked havoc on St. Lucia and other Caribbean islands. [Reuters] The Marshall Islands, a chain of low-lying…