NEW YORK (Reuters) - A gauge of global stock markets dipped slightly on Monday after a mostly strong month and benchmark U.S. bond yields edged lower as investors awaited developments this week from central banks in the United States and elsewhere.Oil prices slumped as more poor Chinese economic figures fanned fears of lower worldwide oil demand. MSCI's gauge of stocks across the globe shed 0.06%, as modest increases for Wall Street's main indexes led by the tech-heavy Nasdaq were countered by..