Make Format.SLD work against ArcGIS Server, r=tschaub (closes #2166)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10034 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Format/SLD/v1.js

@@ -437,6 +437,12 @@ OpenLayers.Format.SLD.v1 = OpenLayers.Class(OpenLayers.Format.Filter.v1_0_0, {
                         "xsi:schemaLocation": this.schemaLocation
                     }}
                 );
+
+                // For ArcGIS Server it is necessary to define this
+                // at the root level (see ticket:2166).
+                root.setAttribute("xmlns:ogc", this.namespaces.ogc);
+                root.setAttribute("xmlns:gml", this.namespaces.gml);
+
                 // add in optional name
                 if(sld.name) {
                     this.writeNode("Name", sld.name, root);