Rename ol/objectutil.js to ol/obj.js

src/ol/structs/rbush.js

@@ -2,7 +2,7 @@ goog.provide('ol.structs.RBush');
 
 goog.require('ol.ext.rbush');
 goog.require('ol.extent');
-goog.require('ol.object');
+goog.require('ol.obj');
 
 
 /**
@@ -243,7 +243,7 @@ ol.structs.RBush.prototype.forEach_ = function(values, callback, opt_this) {
  * @return {boolean} Is empty.
  */
 ol.structs.RBush.prototype.isEmpty = function() {
-  return ol.object.isEmpty(this.items_);
+  return ol.obj.isEmpty(this.items_);
 };