* added stroke, fill and graphic symbolizer properties (all boolean) to

control whether or not to render a stroke, fill and graphic.
 * added a defaultsPerSymbolizer property to OpenLayers.Style to allow 
for extending incomplete symbolizers with defaults for stroke, fill or 
graphic. This also makes Format.SLD read/write round trips possible 
without modifying empty or incomplete <Stroke/>, <Fill/> and <Graphic/> 
constructs. r=tschaub (closes #1876)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@9278 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Renderer/SVG.js

@@ -254,7 +254,10 @@ OpenLayers.Renderer.SVG = OpenLayers.Class(OpenLayers.Renderer.Elements, {
         var widthFactor = 1;
         var pos;
         if (node._geometryClass == "OpenLayers.Geometry.Point" && r) {
-            if (style.externalGraphic) {
+            node.style.visibility = "";
+            if (style.graphic === false) {
+                node.style.visibility = "hidden";
+            } else if (style.externalGraphic) {
                 pos = this.getPosition(node);
                 
         		if (style.graphicTitle) {