jeanmask/subdomain — pull request #10 by saruman (2013-03-18 19:55:29+00:00)
Title: Rename request.php to Request.php

You should change the filename equal to the Class name. Also, the folder name must be change too.
subdomain to Subdomain
For more information: http://kohanaframework.org/3.3/guide/kohana/upgrading#psr-0-support-fileclass-naming-conventions