Updated mediawiki/extensions
Project: mediawiki/extensions/CentralAuth  0480f12c3c4ff6a805c82b73236b43ae16c6f999

Updates to migrateAccount.

Adding the ability to attach matching local accounts to a global account,
the abilty to merge a number of local accounts if the email addresses
match and are confirmed, and also some preparation for the next steps.

Change-Id: I71ee8b635051b8c7a7176bbba1b5a30d27ffea98