Fix compilation on Red Hat 5.x

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Rob Sciuk added to the AUTHORS file

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Apply CLOEXEC on epoll's pollset fd even if EPOLL_CLOEXEC is not defined

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>