Git commits in Moodle 2.7.4 by Eric Merrill

commit ab391cddf0aaa968e2aaa13083405dafe026d2fb
Author: Eric Merrill <merrill@oakland.edu>
Date:   Fri, 19 Dec 2014 05:17:52 +0800
Tag:    v2.7.4

MDL-48655 gradebook: Don't treat a scale with a gradepass of 0 as passed

commit 7b306524e247086f6de678dcfa62b35a433cf9a1
Author: Eric Merrill <merrill@oakland.edu>
Date:   Fri, 19 Dec 2014 02:31:36 +0800
Tag:    v2.7.4

MDL-48638 database SQL: Fix typo in exception constructor