* McDowell closes in on second World Challenge win * Defending champion Woods trails by five shots (Adds quotes, detail) THOUSAND OAKS, California, Dec 1 (Reuters) - Former U.S. Open champion Graeme McDowell, who relishes playing golf in California, edged closer to his first win in two years by ending the third round of the World Challenge with a two-shot lead. The Northern Irishman, who despite ...