XPLUCENE-73: Upgrade to Lucene 2.9.4 Done.
XPLUCENE-73: Upgrade to Lucene 2.9.4
Done.

git-svn-id: ace560153e38297b711cbd4c8e91a836d3f7586e@33281 f329d543-caf0-0310-9063-dda96c69346f

pbondoer/xwiki-platform,pbondoer/xwiki-platform,xwiki/xwiki-platform,pbondoer/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform,pbondoer/xwiki-platform,pbondoer/xwiki-platform,xwiki/xwiki-platform