Every year around this time I start seeing the same thing on DMV porches and decks: lights going up on the railings, a heater dragged out for the people who smoke a cigar after dinner, and a cooler full of drinks parked by the back door because the fridge is out of room. I love it. A deck at the holidays is where the overflow of a good party ends up. It's also the time of year when we ask the most of our decks and look at them the least. Summer's over, the furniture's stacked