Change pack32_array use 32 bit counter (rather than 16 bits).

   still remain.
 o cbuf.[ch], list.[ch] : Checked in new revisions from lsd-tools
 o srun/io.c,msg.c : added io_thr_create(), msg_thr_create() to simplify
   code in main().
 o Other minor fixes/changes

the user's job.

with step id)

allocation unless explicitly specified by user. It was not using an
appropriate task distribution for each job step, as it should based
upon node and task counts.

initiation.
Establish limit of MAX_TASKS_PER_NODE and add matching error code.

initiation.

exceeds the number of nodes and document this behaviour.

but terminates.

multiple log_init calls.

logging.