Make sure correct locks are held when messing with the assoc_mgr cache.

Most of these don't matter as they are all NO_LOCK

Fallout from commit f1ebdef1 when the resources were added.

This is needed for setups like this

TaskPlugin = affinity
TaskPlugin = task/affinity,task/cgroup
TaskPlugin = affinity,cgroup

Slurm 14.03 nccs

Intel MPI, on MPI jobs initialisation through PMI, uses to call PMI_KVS_Put()
many many times from task at rank 0, and each on these call is followed by
PMI_KVS_Commit(). Slurm implementation of PMI_KVS_Commit() imposes a delay
to avoid DDOS on original srun. This delay is proportional to the total number.
It could be up to 3 secs for large jobs for ex. with 7168 tasks. Therefore,
when Intel MPI calls PMI_KVS_Commit() 475 times (mesured on a test case) from
task at rank 0, 28 minutes are spent in delay function.
All other tasks in the job are waiting for a PMI_Barrier. Therefore, there is
no risk for a DDOS from this single task 0. The patch alters the delaying time
calculation to make sure task at rank 0 will does not be delayed. All other
tasks are globally spreaded in the same time range as before.

Ammendment to commit 744f114b

Fix race condition that could start a job that is dependent upon a job array
before all tasks of that job array complete.
bug 1324

Conflicts:
	src/sbatch/opt.c

Bug 1350

flag from a job while the job is waiting for a block to boot.

because of the referenced commit.  ntasks_set is always true on a BGQ at
this point.

Bug 1346

a normal job.

It largely prevents Slurm control over CPU frequency