Updated mediawiki/extensions Project: mediawiki/extensions/CentralAuth 5d9860971a52d65341b4768b6ee66a921111e31f

Split $wgCentralAuthAutoMigrate into two settings

One for merging unattached accounts to an existing global one,
which was the original usage, and create
$wgCentralAuthAutoMigrateNonGlobalAccounts for globalizing unattached
accounts.

The latter currently causes OOMs (T78727) in certain conditions on
the Wikimedia cluster, but it would still be a good idea to keep
the former enabled.

Change-Id: I3b2f6dcf9ef69a6cf49fce953ce67844c74b2ab4