User namespaces progress

And now all Java programs have this privilege. Which is not that bad, since this restriction is brain-dead in the first place. But it also breaks during updates and is totally non-transparent (NOBODY checks file caps).

You might actually notice that I have an answer in the thread you've linked: http://stackoverflow.com/a/7701793/625001 However, while it works for erlang it somehow fails for Java. Don't ask me why.