Git commits in Moodle 2.1.7 by Andrew Davis

commit 196b3fd27fb394eabe419019817f8acec74af9ee
Author: Andrew Davis <andrew@moodle.com>
Date:   Tue, 29 May 2012 11:51:07 +0800
Tag:    v2.1.7

MDL-29173 grade: altered the definiton of round() and added some more unit tests

commit 043af1f6b275493d536c8ecd0cf716c791e41675
Author: Andrew Davis <andrew@moodle.com>
Date:   Mon, 28 May 2012 09:15:28 +0800
Tag:    v2.1.7

MDL-30880 grade: added a check for the feedback property existing before it is used

commit 940e243547e7a9c19494e02ab8484fe48318154a
Author: Andrew Davis <andrew@moodle.com>
Date:   Mon, 21 May 2012 09:08:58 +0800
Tag:    v2.1.7

MDL-32649 rating: fixed the sorting in /rating/index.php

commit 98fcf93146125dc780f72c675d2b22f02a9b984b
Author: Andrew Davis <andrew@moodle.com>
Date:   Sun, 20 May 2012 12:17:44 +0800
Tag:    v2.1.7

MDL-29173 grade: altered the definiton of round() in /lib/evalmath/evalmath.class.php

commit 6be00a7a49c1b734f43de012fd5f09b14de69522
Author: Andrew Davis <andrew@moodle.com>
Date:   Fri, 11 May 2012 11:33:17 +0800
Tag:    v2.1.7

MDL-31460 mod_forum: added some controls to mod/forum/unsubscribeall.php to prevent the removal of subscriptions the user shouldnt be able to delete