revert change from floor (x+0.5) to rint() in fons' frames/time sync code
revert change from floor (x+0.5) to rint() in fons' frames/time sync code

drobilla/jack1,ventosus/jack1,ventosus/jack1,drobilla/jack1,ventosus/jack1,drobilla/jack1,drobilla/jack1,ventosus/jack1