It was a double win for top Vegas casinos Las Vegas Sands (LVS), MGM Resorts (MGM) and Wynn Resorts (WYNN) Wednesday. They got a boost from a report that gambling revenue in China's Macau, the world's top gaming destination, rose sharply in December, a sign of renewed strength in China's economy. The report came on top of a general stock market pop in the wake of the small deal Congress reached that postponed the so-called fiscal cliff. Chinese