not specified by the standard, but other systems set it as well in most
cases. We set it to real {g,u}uid now, if that changes. OpenSSH (sshd)
seems to be agreeable with that solution.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24974 a95241bf-73f2-0310-859d-f6bbb57e9c96