IEA cuts avg 2012 global demand fcst by 400 kbd to 90.7 mbd;
IEA trims 2011 avg non-OPEC supply fcst 200 kbd to 52.8 mbd;
IEA trims 2012 avg non-OPEC supply fcst 200 kbd to 53.8 mbd;
August global oil supply rose 1.0 mbd m/m to 89.1 mbd;
August OPEC crude output rose 165 kbd m/m to 30.26 mbd.