SVG Paths that are not closed do not render properly in VML

[Tom Trenka]

If you try to do something like this:

surface.createPath("M0,0 Q100,-50 200,0").setStroke("black");

...the path element is never rendered in IE. However, this:

surface.createPath("M0,0 Q100,-50 200,0 Z").setStroke("black");

...will be rendered correctly. As far as I can tell, a path element is never inserted into the document.

[Tom Trenka]

Testing between Eugene and I determined that for some reason you cannot end a path segment in VML with a quadratic bezier curve; the workaround (Eugene will commit) is to append " l0,0" to the end of the path segment.

[Eugene Lazutkin]

(In [9839]) Adding "r0,0" to the end of the path segment in VML renderer. Otherwise it tries to wrap control points for curves, which differs with SVG. Minor edit: normalizing all tests. Fixes #2972.