weekly release 1.9.17+
MDL-24403 Adding a missing error string
MDL-24403 Fixing the print_error() calls to use the existing string
MDL-31746 calendar: Fixed up validation inconsistencies when creating/editing an event
MDL-32388 SCORM: Fix chrome pop-ups
weekly release 1.9.17+
Merge branch 'm19_MDL-32388' of git://github.com/danmarsden/moodle into MOODLE_19_STABLE
weekly release 1.9.17+
weekly release 1.9.17+
MDL-18335 calendar event: fixed role capability checking to create new event
weekly release 1.9.17+
Merge branch 'MDL-18335b_m19' of git://github.com/rwijaya/moodle into MOODLE_19_STABLE
weekly release 1.9.17+
Moodle release 1.9.18
MDL-32126 - data - Improvements in the advanced search code.
CONTRIB-3469 - latest version of the HotPot module.
weekly release 1.9.18+
MDL-28676 add hack mysqli php ext requirement for upgrades to 2.x

The mysql extension is not supported in Moodle 2.x, this hack should inform admins that they must add mysqli support before doing 2.x upgrades.
CONTRIB-3662 Hotpot: fix fatal error during restore and general tidy up of spacing
Merge branch 'w21_MDL-28676_m19_mysqli' of git://github.com/skodak/moodle into MOODLE_19_STABLE