Git commits in Moodle 2.6.4 by Charles Fulton

commit 83f78c7c5e2b896ffb164b50a2d36e10eab47b9b
Author: Charles Fulton <mackensen@gmail.com>
Date:   Thu, 26 Jun 2014 22:33:07 +0800
Tag:    v2.6.4

MDL-43347 grades: convert keep highest to text field


commit 78e6292f47ba969c5a653b27e8aa2aa3501537a6
Author: Charles Fulton <mackensen@gmail.com>
Date:   Thu, 26 Jun 2014 02:06:46 +0800
Tag:    v2.6.4

MDL-43347 grades: consistent interface for drop lowest setting