when init_setproctitle() is called.

  - handle negative return code w/ errno == EINTR from sigwait()
  - don't create launch threads detached when running under parallel
    debugger

   caught til now)
 o Determine maximum allowable read size from tasks before attempting
   to write to readers in order to avoid dropping output.

   in srun that needs debugging symbols into attach.c

No change for non-AIX systems.

many problems, especially on 64-bit AIX.

scontrol options. For now only the NULL plugin is available, but this
is required for ASC Purple.

rather than the individual fields from it. This is faster and gives the
plugin author more flexibility to get whatever he wants.

of nodes as required by POE.

recognize that the allocation has already been made. Only setting on
AIX systems.

Also set-up task distribution info in ctx data structure immediately
  after the job step is created (POE needs is early).

liblwcf is not found.

allocation requests which are refused due to completing job (formerly
returned ESLURM_NOT_TOP_PRIORITY)

delays in slurmctld waiting for script to complete.

layout for poe.