The annual meeting of central bankers in Jackson Hole will give Federal Reserve chair Janet Yellen a chance to bounce ideas off her international counterparts as well as get a feel for what they have planned for the coming year. While every meeting of the FOMC has the market waiting with bated breath, there could be an even greater chance for a change of tone this week. “The meeting has previously marked major turning points in Fed monetary policy, and the market will be focused on uncovering clues as to the timing of the first Fed funds rate increase or…