Updated mediawiki/extensions
Project: mediawiki/extensions/CentralAuth  c98a9d3c721f59a6071837a6063f3c983a6f8d4d

Refactor global renaming

Divide the big SpecialGlobalRenameUser which did everything
into one class per task. That way we get tiny classes with
low complexity which can also be unit tested easily.

Change-Id: I277d785f887af5b24809110c0182de77b7d26eec