LONDON (Reuters) - The wreck of jinxed car carrier the Tricolor, which has already been hit by two ships since it sank in the English Channel in December, has done it again -- this time colliding with a salvage tug. Dutch-based Smit Salvage, contracted to remove oil from the partially submerged ship, said on Friday one of its tugs hit the partially submerged wreck and cracked the Tricolor's hull in bad weather on Wednesday. "Due to the high swell she was picked up by a wave and hit the wreck in a very unfortunate place -- directly on a tank...