fails:Process.uid returns the correct uid for the user executing this process
fails:Process.uid also goes by Process::UID.rid
fails:Process.uid also goes by Process::Sys.getuid
fails:Process.uid= raises TypeError if not passed an Integer
fails:Process.uid= raises Errno::ERPERM if run by a non privileged user trying to set the superuser id
fails:Process.uid= raises Errno::ERPERM if run by a non privileged user trying to set the superuser id from username
fails:Process.uid= needs to be reviewed for spec completeness
