Git commits in Moodle 2.5.1 by Brian King

commit 1a703d311e7a89a5d760a00e527b8033b72573ba
Author: Brian King <brian@liip.ch>
Date:   Fri, 21 Jun 2013 17:12:21 +0800
Tag:    v2.5.1

MDL-40130 Caching: let make_categories_list use the cache it makes

commit c017ccff4c1e394a938058e3f0c94a53d630633a
Author: Brian King <brian@liip.ch>
Date:   Mon, 29 Apr 2013 23:39:12 +0800
Tag:    v2.5.1

MDL-39409 auth/cas pass web proxy settings along to phpCAS