Asia stocks edge up as Wall Street extends comeback rally

TOKYO (Reuters) - Asia stocks inched higher on Friday after Wall Street ended volatile trade in the green, adding to the massive gains of the previous session although lingering investor jitters helped support safe-haven currencies such as the yen.MSCI's broadest index of Asia-Pacific shares outside Japan rose 0.15 percent. It has fallen almost 4 percent so far in December.Australian stocks added 0.5 percent and South Korea's KOSPI climbed 0.65 percent. Japan's Nikkei bucked the trend and..