Trigger feature related events with feature information and layer related events with layer information. Also adding events.on and events.un convenience methods. r=crschmidt (closes #1343)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@6149 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

tests/Control/test_SelectFeature.html

@@ -78,7 +78,10 @@
         // mock up layer
         var layer = {
             selectedFeatures: [],
-            drawFeature: function() {}
+            drawFeature: function() {},
+            events: {
+                triggerEvent: function() {}
+            }
         };
         // mock up active control
         var control = new OpenLayers.Control.SelectFeature(layer);