Updated mediawiki/extensions
Project: mediawiki/extensions/FlaggedRevs  c2d1ccd6c492512862e6ec66bb209908be898994

Stop using $wgDeferredUpdateList

Also specify that FRExtraCacheUpdate implements
DeferrableUpdate. FRSquidUpdate was so short
it was turned into a MWCallableUpdate.

Change-Id: I1a7c6540b285a5a2e918898021af461335789e2c