The "flags" option was not being forwarded to the slurmctld, but
was always set to 0.

Change the scancel command to always use the job_id string based API.
Add retry logic on the job_id string logic.
Add more checking for error codes and used appropriate exit codes.
Use NO_VAL rather than "-1" for unset signal value.

Change the temporary file names used by two tests to include the
test ID number, so we can see where they came from if left around.

The jobcomp/elasticsearch plugin's Makefile.am file was accidentally
not added to GIT...

In the course of testing some scancel changes, a bunch of tests generated
"FAILURE" messages due to job cancellation failures, but the tests reported
"SUCCESS" at the end and an exit code of zero. This patch adds a checks
for the return value of the "cancel_job" procedure.

In slurmctld communication agent, make the thread timeout be the configured
value of MessageTimeout (or 30 seconds, whichever is larger) rather than
30 seconds.

Conflicts:
	src/scancel/scancel.c
	src/scancel/scancel.h

Fix scancel bug which could return an error on attempt to signal a job step.
A simple "scancel 12.3" to signal a specific job step would fail. Adding
another option (say "-i", "--partion=", etc.) would fix this.

check for more error conditions and avoid a memory leak if an error occurs.

Log when job state information is not being archived, but being cached. Print an error after each 100 jobs.

The plugin version number contents have changed in Slurm v15.08.

Recent scancel mods resulted in a duplicate error when trying to
signal a non-existent job. This removes the second error.

No change in logic

Previous logic would not recognize a job ID specification with a
  job array task ID of "*" (e.g. "123_*") to indicated all job
  array tasks.
Previous logic would stop any parsing after the closing bracket
  on a job array specification (e.g. "123_[4-6] 234" would not
  see the "234").
Improve logging of job ID specifications (i.e. use job array
  specification).

Conflicts:
	NEWS

Modify slurmctld's parsing of a job_id string for the job_signal and
job_requeue calls to treat a job ID value of "#_*" as representing
all tasks in a job ID number "#". Previously treated as invalid input.

Also set the last_job_update time so that if a pending job is killed,
then that is reported immediately by "squeue -i#" (previously it
may keep reporting stale date.

Trying to avoid having technical questions sent to "sales@schedmd.com"

This avoids letting the queued scheduling thread from starting
if the main scheduling loop is still running.