Conflicts:
	src/common/gres.c

Improve logging, comments, and formatting

The thread is not fleshed out yet

Conflicts:
	contribs/perlapi/libslurmdb/Makefile.in

This change prevents a new debug() message from being generated
if an explicit timeout was set, as used by END_DEBUG3.

Log long processing times with the verbose() call only if they
  take over 3 seconds (previously 1 second).
Log anything over 1 second using debug().
bug 1082

installing

Conflicts:
	src/slurmctld/job_mgr.c

If some tasks of a job array are runnable and the meta-job array
record is not runable (e.g. held), the old logic could start a
runable task then try to start the non-runable meta-job, discover
it can not run, and set its reason to "BadConstraints".

Test case:
Make it so no jobs can start (partition stopped, slurmd down, etc.)
submit a job array
hold the job array
release the first two tasks of the job array
Make it so jobs can start

This backports some logic already added to v15.08

Conflicts:
	src/squeue/print.c

Squeue modified to not merge tasks of a job array if their wait reasons
differ.
bug 1388

Bad copy/paste, needed to change name offset

No functions currently exist, only the plugin wrapper and stubbed functions.

New configuration parameters: PowerParameters, PowerPlugin
New power management web page

--export sbatch/srun command line option, propagate the users'
environ to the execution side. #1367

a Cray being that of a normal Linux system.

Interpret a partition configuration of "Nodes=ALL" in slurm.conf as
including all nodes defined in the cluster.
but 1382

bug 1379

bug 1375

Prior logic would only process data from one plugin.
That's probably fine for now, but most other logic can
support multple simultaneous burst buffer plugins.