Improve how failures in slurmd/slurmstepd communications are logged.

mail messages for job array events print now use the job ID using the
format "#_# (#)" rather than just the internal job ID.

Cray network.

Cray/ALPS system - Enable backup controller to run outside of the Cray to
accept new job submissions and most other operations on the pending jobs.

* Handle a missing ALPS spool directory
* Update debug statements to work like the switch plugin
* Move some code into static functions
* Keep track of the number of active job steps and call
  alpsc_node_app_epilogue

Add child_forked() function to the slurm_acct_gather_profile plugin to
close open files, leaving application with no extra open file descriptors.

Conflicts:
	src/slurmctld/job_mgr.c

This will help limit damage from two active primary slurmctld
(split brain problem).

it is already running.

Conflicts:
	testsuite/expect/test7.9

Duplicate triggers are not not allowed

Job profiling leaves a file open

job is JOB_COMPLETING or already pending.

last epilog completes, either slurmd epilog or slurmctld epilog,
whichever comes last.

Describe cgroup-based core specialization support.

don't clear the dependency if the job is completing.

(Also remove extra pending check, no reason to check it twice ;))

Conflicts:
	src/slurmctld/job_mgr.c

If the backup slurmctld assumes primary status, then do NOT purge any
job state files (batch script and environment files) but if any attempt
is made to re-use them consider this a fatal error. It may indicate that
multiple primary slurmctld daemons are active (e.g. both backup and primary
are functioning as primary and there is a split brain problem).

Replace printing of job_id using %d with %u

Conflicts:
	src/slurmctld/slurmctld.h

Test time when job_state file was written to detect multiple primary
slurmctld daemons (e.g. both backup and primary are functioning as
primary and there is a split brain problem).

Signed-off-by: Danny Auble <da@schedmd.com>

when specified escaped.