[logwatch/f17] (5 commits) ...Add sshd-undef patch (rhbz#783528)

[jsynacek]

Summary of changes:

  8c6a06b... Add dovecot-proxy patch (rhbz#812883) (*)
  e3fbb90... Add secure-update patch (rhbz#809314) (*)
  71e3472... Add mail-headers patch (rhbz#811185) (*)
  63e79b1... Add systemd-logind patch (rhbz#812880) (*)
  8ebb6d2... Add sshd-undef patch (rhbz#783528) (*)

(*) This commit already existed in another branch; no separate mail sent