NEW YORK (Reuters) - Hurricane Dean, which could strengthen into a Category 4 hurricane over the next few days, will likely cross the islands of the eastern Caribbean on Friday and could threaten the Gulf of Mexico next week. Meanwhile, Tropical Depression Erin produced heavy rains over portions of Texas as it weakened after moving inland over the south Texas coast this morning. The energy market is watching the weather models to see if Dean will enter the Gulf of Mexico and where it could disrupt the region's oil and natural gas facilities, which account for roughly a third of...