fix for #699 - give WFS layer a mergeNewParams()

git-svn-id: http://svn.openlayers.org/trunk/openlayers@3575 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/WFS.js

@@ -228,6 +228,22 @@ OpenLayers.Layer.WFS.prototype =
             OpenLayers.Layer.Markers.prototype.onMapResize.apply(this, arguments);
         }
     },
+    
+    /**
+     * APIMethod: mergeNewParams
+     * Modify parameters for the layer and redraw.
+     * 
+     * Parameters:
+     * newParams - {Object}
+     */
+    mergeNewParams:function(newParams) {
+        var upperParams = OpenLayers.Util.upperCaseObject(newParams);
+        var newArguments = [upperParams];
+        OpenLayers.Layer.HTTPRequest.prototype.mergeNewParams.apply(this, 
+                                                                 newArguments);
+        //redraw
+        this.moveTo(null, true);
+    },
 
     /**
      * APIMethod: clone