[krb5/f18] (6 commits) ...revise Filip's patch so that it more closely mimics the select() path

[Nalin Dahyabhai]

Summary of changes:

  cf693a2... cut out an extraneous label configuration reload (*)
  9a4c3f7... conflict with broken libsmbclient builds on EL6, so that we (*)
  e39bc82... pull up patch for RT#7063 - KDC/client time skew (*)
  4c51c8b... more backported fixes for keytab-doesn't-have-all-key-types (*)
  a4ad97a... abort the current transmit attempt if our timeout is negati (*)
  3e1f398... revise Filip's patch so that it more closely mimics the sel (*)

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