maintenance: Script to rename titles for Unicode uppercasing changes

maintenance: Script to rename titles for Unicode uppercasing changes

This uses MovePage where possible to try to better keep data in sync.
Archives, log entries, and so on can't do that though.

The script skips User and User_talk pages for registered users, as
renaming the users is more complicated than makes sense to try to
implement here. Use something like Extension:Renameuser to clean those
up; this script can provide a list of user names affected.

Bug: T219279
Change-Id: I157577cb5bedfd347b808c254fb19ae8088818ab