o Try harder to clean up shm semaphore in slurmd
 o call daemon(1,0) instead of daemon(0,0) in slurmctld to preserve chdir()

 o Only terminate IO thread if IO is done or job is in FORCETERM state

   (may be a residual from cbuf operations)

 o launch.c : small cleanup, make sure return code is preserved

slurm_cancel_job RPC now takes signal argument.
slurmctld takes the signal number on slurm_kill RPC, but does nothing with it yet.

slurm_cancel_job RPC now takes signal argument.

   for scontrol
 o provide featureless readline alternative in case GNU readline is not
   available

cancel entire job).

steps are currently assigned to that node.

pthread_kill(tid, SIGHUP) to knock loose the hung poll()

   prolog is run as root and failure is reported as a non-zero return code
   from the launch tasks or launch batch job messages
   epilog is run as result of revoke credential message

   absolute pathname

Modify slurmd to dump/restore credentials at termination and restart.

New RPC added for slurmd to send batch_sid to slurmctld.
batch_sid added to slurmctld batch data structure and support for RPC
  to supply that info from slurmd
slurmd uses getsid to process pid to slurm job_id mapping RPC.

New RPC added for slurmd to send batch_sid to slurmctld.
batch_sid added to slurmctld batch data structure and support for RPC
  to supply that info from slurmd

New RPC added for slurmd to send batch_sid to slurmctld.

read_proc.c given general clean-up

 o fix _search_path() to handle absolute and relative pathnames