GS-11139

Work around that prevent from classloader keeping file handlers open even after the classloader is unloaded and the files are deleted.

Work around described in:
http://abondar-howto.blogspot.com/2010/06/howto-unload-jar-files-loaded-by.html

Reviewer: Dank


git-svn-id: svn://pc-lab14/SVN/xap/trunk/openspaces@142661 eb64e737-3616-4df0-8941-5ee2ae88103d