MDL-36927 Reports: Page layout is not defined in course/recent.php
MDL-38044 form: Added collapse/expand all buttons
MDL-15727 basic jQuery support

See http://docs.moodle.org/dev/jQuery for more details.
MDL-38581 move forum discussion and post generators to proper place
MDL-37033 environment: add 2.5 brach details
MDL-38654 do not test $CFG->gdversion

GD PHP extension is now required. Add-ons need to remove $CFG->gdversion tests. The worst case regression is that add-on will think GD is not available.
MDL-38658 JavaScript: Correct fullpath for dndupload definition
MDL-34917 course: Jump to section navigation for 'One section per page'.
MDL-38668 timezones: update to tzdata 2013b
MDL-38674 JavaScript: Migrate moodle-filter_glossary-autolink to use Shifter
MDL-38675 import tcpdf 5.9.209
MDL-31681 added core_grade_get_definitions web service function
MDL-38654 add full $CFG->gdversion backwards compatibility for now
MDL-37033 Environment - Fix indenting in XML
MDL-31681: Formatting changes to fix indentation

Also removed/refactored some confusing use of references.
MDL-38654 Deprecating gdversion setting: Fix typo for new install
MDL-38573 choice: Reformat settings form