Adapt hatch processing to keep a view-dependent minimal distance for a more
pleasant visualisation

(cherry picked from commit 6a036e7a)

Conflicts:
	drawinglayer/inc/drawinglayer/attribute/fillhatchattribute.hxx
	drawinglayer/inc/drawinglayer/primitive2d/fillhatchprimitive2d.hxx
	drawinglayer/inc/drawinglayer/primitive2d/primitivetools2d.hxx
	drawinglayer/source/attribute/fillhatchattribute.cxx

Change-Id: I15cd784ef7d3e47a20308f16d370c24ef46d2f22