Overrides any setting for SLURM_EXPORT_ENV, which can make nesting jobs
simpler.

If SBATCH_EXPORT_ENV=NONE (which will cause SLURM_EXPORT_ENV=NONE to be set
in the batch step) is used alongside SRUN_EXPORT_ENV=ALL, this allows for
the batch environment to be reset, but then for changes made in the batch
script (e.g., loading modules with 'module load') to propagate out as part
of the step launch.

The same can be accomplished by the user in their scripts by explicitly
setting 'srun --export=ALL ...' for every step launch, but this should
provide an easier mechanism for sites to make this behavior the default
for their users by pushing this pair of environment variables into their
users default profiles.

Bug 5537.

Bug 6615.

Wrong author attribution.

This reverts commit 1712db06.

Add .commandline to make env vars, code, and commands stand out.

Bug 6615.

Escape "<exit>:<sig>" so it shows up in html.
Fix bad grammar and misspellings.

Bug 6615.

Bug 6615.

Matches PrologSlurmctld/EpilogSlurmctld behavior to Prolog.

Bug 6615.

Bug 6737.

When JobIDRaw started being published in the sacct -l output, the
result was to print the job ID twice, but part of the header being
looked for not at all. The result was for the test to pass, when
it really should not have. The bug was introduced in commit
9686a4b7, April 1, 2015.

Bug 6252

Continuation of 75ef39d7

Matches squeue -s for extern and pending steps

Bug 4820

bug 6725, comment 15

to run RebootProgram from ctld.

Bug 6115

Bug 6010

# Conflicts:
#	src/common/gres.c

Wrong variable was used.  This works fine for 18.08, but in 19.05 this
code doesn't work correctly.

Bug 6739

It was used for gres/mps debugging, but is no longer used.

bug 6725, comment 15

Bug 6865

Bug 6313

Bug 6869

to guarantee a minimum runtime before preemption.

Bug 5519

Bug 5519

to send user signal at preemption time.

Bug 5867

to send job warn signal. In the gracetime logic, it wasn't checking for
the B option.

Bug 5867

# Conflicts:
#	src/slurmctld/acct_policy.c
#	testsuite/expect/README
#	testsuite/expect/globals
#	testsuite/expect/test21.39

Bug 6625.

Also correction to rebase problem
Bug 6635