GS-11139

Call java 7 API of URLClassLoader.close when the ServiceBeanAdapter is cleaning up class loaders.
If java 6 is used the close method will not be called.

git-svn-id: svn://pc-lab14/SVN/xap/trunk/openspaces@152028 eb64e737-3616-4df0-8941-5ee2ae88103d