GLOBAL MARKETS-Shares near all-time highs, dollar moves higher

(Updates with U.S. market open) * Wall St little changed as industrials, techs weigh; telecoms gain * Fed policy meeting, U.S. GDP in focus * U.S. Treasuries rally; euro zone bond yields at record lows * Emerging market shares hit three-year high By Angela Moon NEW YORK, July 29 (Reuters) - World share markets hovered just below all-time highs on Tuesday as investors drew encouragement from a rally in China, while Russian stocks enjoyed some respite after three days of h