2008-05-18  Hans Breuer  <hans@breuer.org>

	Attempts to fix bug #534275
	* lib/diagdkrenderer.c(draw_fill_rounded_rect) : attempt to make
	arc drawing for radius<line_width less backend specific. 
	* objects/standard/box.c objects/standard/polyline.c 
	  objects/standard/zigzagline.c : 
	set LINEJOIN_ROUND when rendering "rounded" (with radius>0)


svn path=/trunk/; revision=4044