Fix rk_cloexec_socket() prototype
kimpersonate sessionkeyoption and afsdes

Signed-off-by: Love Hornquist Astrand <lha@h5l.org>
/sess-/session-/g since a few extra letter makes it easier to understand
Try to make the KDC detach only after it's ready, that way there's no need to wait for it

    NOT READY!!!!  DOESN'T WORK.