This is also in CVS.
In a quick test, the only thing I noticed is that the figure window
does not resize when embedded but does on a normal plot. I don't know
if this is a bug or a feature :-). In backend_gtk, I handle the
configure event in the FigureCanvas.
Gary, if you need a src snapshot (the regular CVS mirrors can lag
sometimes by a couple of days), let me know.