Git commits in Moodle 2.7.5 by Rod Norfor

commit 73841c3908bb19d952352c024fc48c77a6865b42
Author: Rod Norfor <rod.norfor@open.ac.uk>
Date:   Thu, 22 Jan 2015 00:23:08 +0800
Tag:    v2.7.5

MDL-48914 admin: check maxuserperpage in existingroleholders->find_users