Updated mediawiki/extensions
Project: mediawiki/extensions/OpenID  a45d72d09e6a6ad65519b4e4a574c2dc628fa8c7
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Inline SpecialPageFactory::setGroup, gets deprecated in 1.21

See I1de3a186.
The global gets also deprecated, but will not give a warning.

Change-Id: Iec05cb1e09347ecd2ed2a0ff6802a3b386f2c041