Improve kpropd behavior in iprop mode

 - Make kpropd in iprop mode fork a child to listen for kprops from the
   master.  The child writes progress and outcome reports to the parent
   for each kprop.  This fixes a race between asking for a full resync
   and setting up a listener socket for it.

 - Add runonce (-t) for kpropd do_standalone() too.

 - Add a new iprop parameter: iprop_resync_timeout.  kpropd will keep
   asking for incremental updates while waiting for a full resync to
   finish, and will re-request a full resync if kadmind continues to
   indicate that one is needed after this timeout passes since the
   previous full resync was requested.

 - Allow polling intervals less than 10 seconds.

[ghudson@mit.edu: split out debug output changes; note polling interval
change in commit message]

ticket: 7373

0 files changed, 0 insertions, 0 deletions