Updated mediawiki/extensions
Project: mediawiki/extensions/SemanticMediaWiki  77ec97dd09a9816572c64d41336255218c758ca9

spl_autoload_register SMW classes

SMWPageSchemas causes trouble in AutoloadRegisterTest which complains
about Class 'PSExtensionHandler' not found
therefore use $wgAutoloadClasses['SMWPageSchemas'] registration instead.

Change-Id: I9144be5412b621c4166cbe352fbf3cf2f859f0ba