Adding back events documentation.

When the list of event types became unconstrained in 501b42228a, we lost the documentation for events that are triggered.  This change adds the list of events triggered to the API docs for events properties.

lib/OpenLayers/Control.js

@@ -139,10 +139,7 @@ OpenLayers.Control = OpenLayers.Class({
      * APIProperty: events
      * {<OpenLayers.Events>} Events instance for listeners and triggering
      *     control specific events.
-     */
-    events: null,
-
-    /**
+     *
      * Register a listener for a particular event with the following syntax:
      * (code)
      * control.events.register(type, obj, listener);
@@ -161,6 +158,7 @@ OpenLayers.Control = OpenLayers.Class({
      * activate - Triggered when activated.
      * deactivate - Triggered when deactivated.
      */
+    events: null,
 
     /**
      * Constructor: OpenLayers.Control