MDL-45212 scorm: Disable sorting on unsortable columns in SCORM reports
MDL-41313 mod_forum: Remove deprecated post_form.php
MDL-45627 mod_fourm: Move subscriber classes to separate class files
MDL-45658 events: included enrolment method in the user_enrolment_deleted/updated event descriptions
MDL-45625 mod_forum: Deprecate many old forum functions

This also moves these to their own file to help manage the deprecation process.
MDL-45677 mod_assign: removed treatment of an array as an object
MDL-18162 mod_forum: Correct phpdoc for forum_clean_search_terms
MDL-44054 quiz_statistics fix lang string concatenation.
MDL-45592 mod_feedback - unwanted linebreak after import or duplicating a feedback
MDL-45513 cache: added support to unit tests for alt cache stores
MDL-45513 cache: implemented defines for unit testing alternative caches
MDL-45726 SCORM: Correct check for forcenewattempt
MDL-41665 scorm : Rewriting using html_writer
MDL-45781 quiz autosave: detect and report when the session is lost.

and also other errors.
MDL-45630 events: removed unnecessary 'the' from event descriptions
Merge branch 'MDL-45625-master' of git://github.com/andrewnicols/moodle
MDL-45625: fixed whitespace
Merge branch 'master_MDL-45212' of git://github.com/totara/moodle
Merge branch 'master_MDL-45726' of https://github.com/danmarsden/moodle
Merge branch 'MDL-18162-master' of git://github.com/andrewnicols/moodle