Git commits in Moodle 2.9.1 by Dave Cooper

commit 5d8cfda315c47850e4fcad3b4a796fe5f5569b09
Author: Dave Cooper <dave@moodle.com>
Date:   Thu, 28 May 2015 15:55:36 +0800
Tag:    v2.9.1

MDL-49497 curl: Add configurable User-Agent unit tests.

commit 1f2fbac2075a3cb9bc3c8613d2f8b18bd7bf6582
Author: Dave Cooper <dave@moodle.com>
Date:   Thu, 28 May 2015 15:54:31 +0800
Tag:    v2.9.1

MDL-49497 curl: Allow configurable User-Agent.