Git commits in Moodle 3.3.x by Eric Merrill

commit cd729dc905f845a61e648d0e07fde6596ab7d2c6
Author: Eric Merrill <merrill@oakland.edu>
Date:   Fri, 14 Apr 2017 00:21:13 +0800
Tag:    v3.3.0-beta

MDL-58593 database: More efficiently track issued key names


commit 28cdba9dcfe582c83b7c7f2eaf4c45f5b60ca205
Author: Eric Merrill <merrill@oakland.edu>
Date:   Wed, 15 Mar 2017 03:09:27 +0800
Tag:    v3.3.0-beta

MDL-58262 assign: Use unique sql parameter


commit 75e74407a3bce32843758ef35cd766f4a6576cee
Author: Eric Merrill <merrill@oakland.edu>
Date:   Tue, 14 Feb 2017 11:33:42 +0800
Tag:    v3.3.0-beta

MDL-57859 persistent: Add a combined create/update call


commit 7dfc65dbf9667ab953ab04c52eb8c0a0be6824a7
Author: Eric Merrill <merrill@oakland.edu>
Date:   Thu, 09 Feb 2017 03:30:56 +0800
Tag:    v3.3.0-beta

MDL-57708 assign: Fix display of overridden submissions