Move start time for sched timeout after locks

Move start time of main scheduling loop timeout after locks are aquired.
bug 698
Log sched parameters at startup
Expand description of max_sched_time config param

Expand the description of the SchedulingParameters max_sched_time
configuration parameter for greater clarity
Remove vestigial logging
Add squeue option to print a job's nice value

Add squeue job format option of "%y" to print a job's nice value.
bug 696
scontrol update job operates on job array

Update scontrol update jobID logic to operate on entire job arrays.
Merge branch 'slurm-14.03'

Conflicts:
	src/squeue/opts.c