running with "--test-only" flag

srun --test-only --jobid=# [--nodelist=hosts]
This executes almost identical code to the 
sched/wiki2 will_run test.

sched/wiki2 from select/linear

gang scheduling if SelectTypeParameter=CR_Memory in slurm.conf.
Add will_run functionality to select/linear and hooks to other plugins.

    partition max_share parameter and tries to match like size jobs on the
    same nodes to improve gang scheduling performance.

clean up logic to read node/job/partition state file's version

structure in slurmctld

fix some undefined functions and also changed the accounting to use total_procs which should be the correct total procs a job is using

 debug level at any time (Hongjia Cao, NUDT).

    with HostFormat=2 in the wiki.conf file.