cakephp/cakephp — pull request #915 by bar (2012-10-25 15:37:12+00:00)
Title: Avoid duplicating RequestHandler component.

If ```RequestHandler``` component is duplicated, later when calling ```CakeErrorController::constructClasses()```:

```CakeErrorController::_mergeVars()``` is called to merge components and helpers [1], and ```CakeErrorController::_mergeVars()``` merges because they are different [2]

[1] https://github.com/bar/cakephp/blob/master-cake-error/lib/Cake/Controller/Controller.php#L561
[2] https://github.com/bar/cakephp/blob/master-cake-error/lib/Cake/Core/Object.php#L193