GLOBAL MARKETS-Bonds rally on weak U.S. durable figures; Italian bonds, stocks down

* Italian stocks, bonds fall on Berlusconi threat * Weak U.S. goods data tempers September Fed tapering view * Currency markets subdued, dollar finds support after dip By David Gaffen and Marc Jones NEW YORK/LONDON, Aug 26 (Reuters) - U.S. Treasury bonds rallied after a weaker-than-expected result for durable goods orders, but global equity markets were relatively calm in an otherwise slow Monday trading session. One exception was in Italy, where the risk of a new governmen