the current implementation uses PolyPolygonHairlinePrimitive2D for
polygons. This patch uses a PolyPolygonStrokePrimitive2D which makes
use of the correct (transformed) pen width and some basic join and cap
attributes.

Change-Id: Ifbd8cbbc41004d9d45f3c48f2c13fe449025a229
Reviewed-on: https://gerrit.libreoffice.org/40638Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Armin Le Grand <Armin.Le.Grand@cib.de>