XWIKI-4496: Unit tests need more heap space
XWIKI-4496: Unit tests need more heap space

* Isolate tests.

git-svn-id: d23d7a6431d93e1bdd218a46658458610974b053@24561 f329d543-caf0-0310-9063-dda96c69346f

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