Updated mediawiki/extensions
Project: mediawiki/extensions/LdapAuthentication  987e7567c30501bb4b6605e7aa6e30d3a89f6282

Remove redundant LowerCaseUsernameScheme global

There were two redundant globals that did the same thing, requiring
both to be set.

Change-Id: Iba50e473532d477020a119ecb1aaece4bdf3253a