GLOBAL MARKETS-Wall St rises, yen hits 7-year low

* Wall Street Dow, S&P indices at new closing highs * Treasuries' price gains dulled by Alibaba bond deal * Weak euro zone, China PMI data worry investors * Yen touches seven-year low vs dollar (Adds New York closes, late prices) By Michael Connor NEW YORK, Nov 20 (Reuters) - World stock markets slipped on Thursday on signs the Chinese and European economies were cooling, while Japan's yen slid to seven-year lows against the dollar amid expectations of more Japanese stimulu