Updated mediawiki/extensions
Project: mediawiki/extensions/CirrusSearch  7509c7173a88d34762832f2973377d0138efacec

Switch English to kstem.

The old stemmer (Porter) was having trouble with words like "aliases"
and "uses".  kstem has problems as well, I believe there are fewer of
them.

Bug: 54811
Bug: 54022

Change-Id: I0722c13f7d023d8ad8a6845403be974262b91054