(undated)  --  Somebody won the billion-dollar Powerball jackpot.  Lottery officials say a single ticket in Oregon matched all six numbers in Saturday's drawing, and is worth an estimated one-point-three-billion dollars.  Powerball says it's the fourth-largest jackpot in the history of the game.  The winner has the option of getting the full amount, before taxes, spread out over 30 years, or getting a lump sum payment of about 620-million dollars.