XWIKI-5279: Ugrade to Groovy 1.7.3
XWIKI-5279: Ugrade to Groovy 1.7.3

git-svn-id: d23d7a6431d93e1bdd218a46658458610974b053@29472 f329d543-caf0-0310-9063-dda96c69346f

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