Updated mediawiki/extensions/Wikidata
Project: mediawiki/extensions/Wikibase  863d2a694d4972145261c247418bcc100495b246

Fix the unit tests on MySQL by introducing a hack in ChangeOpsMerge

Based on code by Daniel Kinzler.

Change-Id: I31d065a2cd618ff0c785149afe1ae0779fdcd923