Updated mediawiki/extensions
Project: mediawiki/extensions/OAuth  c349353a4aa5219e738f16efe9bad237a19ad518

Add MediaWiki\Extensions\OAuth namespace

hhvm needs it. Using a longer namespace to ensure we don't conflict
with anything, and take a step towards PSR compliance.

Bug: 66929
Change-Id: Ia53878666ca93bd4279c75f5e5e804c9b97ff04d