EllisLab/CodeIgniter — pull request #1066 by ashleyevans (2012-02-20 21:33:36+00:00)
Title: Added missing application/config/memcached.php file as referenced in the...

... User Guide

The 'Caching Class' page of the User Guide makes it seem to the user that there is a memcached.php file within the application/config/ folder, but there isn't one by default.