GLOBAL MARKETS-Stocks fall for week as shutdown continues; dollar near lows

* U.S. shutdown enters 4th day; World stocks down 0.4 percent for week * Wall St end higher on Friday, but Dow, S&P 500 post weekly loss * Dollar rises 0.5 percent but not far off eight-month low * U.S. one-month T-bill rates hit highest in 10 months on default fears By Wanfeng Zhou NEW YORK, Oct 4 (Reuters) - Major stock markets rose on Friday but posted a second week of losses while the dollar hovered near an eight-month low on fears the budget standoff in Washington will