Add test7.15 to test for any signals blocked by default in job tasks.

It was found that slurmstepd was intermittently leaving SIGPIPE
blocked when launching user tasks. This may have something to do
with the fact that the xsignal_unblock() call in _fork_all_tasks()
is referencing an extern array (nominally this should have unblocked
SIGPIPE), but I didn't spend the time to fully track this issue
down. Instead, I figured there is probably no reason we would _not_
want to unblock *all* signals, so this patch does that.

Before this change, the following program fails every once in awhile:

 #include <stdio.h>
 #include <signal.h>

 int main (int ac, char **av)
 {
	int i, rc = 0;
	struct sigaction act;
	for (i = 1; i < SIGRTMAX; i++) {
		sigaction (i, NULL, &act);
		if (act.sa_handler == SIG_DFL)
			continue;
		fprintf (stderr, "Signal %d appears to be ignored!\n", i);
		rc = 1;
	}
	return (rc);
 }

with:

 srun -N1 -n1 ./test
 Signal 13 appears to be ignored!

after the change, the program succeeds.

number.

This new sbatch option allows the user to specify a file containing
environment variables to be used in the jobs execution environment.

Let operators see reservation data even if "PrivateData=reservations" flag
is set in slurm.conf. Patch from Don Albert, Bull.

Make slurmd -C output print "CPUs=" rather than "Procs=" to match
current slurm.conf standard

It used to be listed as "--switch=" rather than "--switches="

Fix bug in srun --multi-prog configuration file to avoid printing duplicate
record error when "*" is used at the end of the file for the task ID. It
means all task IDs not otherwise identified.

Fix race condition where sbcast command can result in deadlock of slurmd
daemon. Patch by Don Albert, Bull.

Made squeue -n and -w options more consistent with salloc, sbatch, srun,
and scancel. Patch by Don Lipari, LLNL.

to be given the entire dimension we switch the request to TORUS.

so you can specify any connection type you would like (TORUS or MESH) as
the default in dynamic mode.  Previously it always defaulted to TORUS.

taken out of error.

midplane would run).

in a midplane.

Add #define for statistic parameters.
Add version number to statistics un/pack functions.
Only let SLURM administrators reset the statistic counters.