cmGrPlot.c : Fixed an apparent bug in cmGrPlotObjSetStateFlags() where _cmGrPlotObjSetFocus() was only called if the focus flag was already set when it appears it should only called when it is not already set.
Changed cmGr,cmGrPlot,cmGrPlotAudio to better handle events.
Rewrote cmGr.c::cmGrEvent()
Callback cmGrIsInsideObj() now must evaluate both if the mouse point is
inside the object and also if the object can handle the event. This
allows the actual plot object which can handle an event to be identified
by cmGrEvent().
_cmGrPlotObjEvent() still needs to be updated to account for these changes.