http://docs.python.org/dev/library/select.html#select.epoll documents the EPOLL_CLOEXEC flag as something you can specify that makes the file descriptor be closed on exec.  But then it goes on to say that the file descriptor is non-inheritable.  So is the flag useless and should be removed from the docs, or is the documentation just unclear as to its purpose?  Or, conversely, do we need a way to say that the file descriptor should *not* be closed on exec?