add abort method to wfs protocol, r=tschaub (closes #1943)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@8933 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Protocol/WFS/v1.js

@@ -323,6 +323,21 @@ OpenLayers.Protocol.WFS.v1 = OpenLayers.Class(OpenLayers.Protocol, {
         });   
         
     },
-   
+
+    /**
+     * Method: abort
+     * Abort an ongoing request, the response object passed to
+     * this method must come from this protocol (as a result
+     * of a read, or commit operation).
+     *
+     * Parameters:
+     * response - {<OpenLayers.Protocol.Response>}
+     */
+    abort: function(response) {
+        if (response) {
+            response.priv.abort();
+        }
+    },
+  
     CLASS_NAME: "OpenLayers.Protocol.WFS.v1" 
 });