For controls with multiple handlers, we now tack them on to a handlers object. The base destroy takes care of the handlers. r=crschmidt,uz/2 (closes #1338)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@6106 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control.js

@@ -139,6 +139,15 @@ OpenLayers.Control = OpenLayers.Class({
             this.handler.destroy();
             this.handler = null;
         }
+        if(this.handlers) {
+            for(var key in this.handlers) {
+                if(this.handlers.hasOwnProperty(key) &&
+                   typeof this.handlers[key].destroy == "function") {
+                    this.handlers[key].destroy();
+                }
+            }
+            this.handlers = null;
+        }
         if (this.map) {
             this.map.removeControl(this);
             this.map = null;