Athens and ellipse drawing (again)

background:

forum.world.st/Athens-and-ellipse-drawing-td4754256.html

drawing an ellipse by drawing a non-uniform-scaled circle
works, but the border is scaled as well.

in Roassal2, ellipse shapes always use a small 1px border

(https://code.google.com/p/moose-technology/issues/detail?id=1097)

As described in the above 2 threads, it is possible to draw an ellipse
with uniform border with cairo, and it is possible to do this
with athens, although athens does not provide this as a public api.

A much easier solution than the one I suggested in
https://code.google.com/p/moose-technology/issues/detail?id=1097

is to use athens "paintTransform".

We need to add
AthensCairoCanvas>>setPaintMatrix

(similiar to setPathMatrix)

and call this in
AthensCairoStrokePaint>>#athensFillPath:on:

    self prepareForDrawingOn: aCanvas.
   
    aCanvas
        newPath;
        loadPath: aPath;
        setPaintMatrix;          "< --- new"
        stroke

what do you think?

Nicolai