By Svea Herbst-Bayliss (Reuters) - As 2016 shapes up to be even more unpredictable than last year, wealthy investors are planning to allocate more of their money to hedge funds focusing their bets on rates, currencies and commodities rather than stocks, a strategy which tends to fare better in volatile environments. So-called global macro funds, like the ones run by industry icons Paul Tudor Jones, Alan Howard and Ray Dalio, are expected to rank among this year's best performers, according to J.P. Morgan's Institutional Investor Survey 2016, gathering input from 322 investors controlling $910 billion in assets. Some 16 percent...