Git commits in Moodle 2.9.2 by Michael Aherne

commit 121ab83eb58f4943feef095e097e8bad6a7d75fb
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Mon, 24 Aug 2015 16:06:26 +0800
Tag:    v2.9.2

MDL-51181 config: Correct documentation of lock_factory


commit af4266eac70c173052a146852ba9a8671b437e85
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Thu, 06 Aug 2015 19:53:17 +0800
Tag:    v2.9.2

MDL-51016 messaging: Fix email attachments on Windows


commit 200ff69b414f080121cc336c57d57c69e4fc1621
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Fri, 26 Jun 2015 22:35:33 +0800
Tag:    v2.9.2

MDL-50466 tasks: Specific minute values for log cleanup


commit 8621a178a10b9dc16d780bbcad73c6a0cd664f34
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Tue, 28 Apr 2015 16:14:31 +0800
Tag:    v2.9.2

MDL-50490 cron: Prevent tasks from leaving uncommitted transactions