"resp_port" and "io_port".  Now they just list the available listening
ports in the client (srun/slaunch), instead of listing a port per node
(which contains many duplicate ports).  The slurmd picks a port to use
based on number of available ports modulo its own rank in the job step.

- SlurmdPidFile, SlurmdLogFile, and SlurmdSpoolDir may each contain a
  "%h" and/or a "%n", which will be replaced by the hostname or NodeName,
  respectively.
- Add new xstring.c xstrsubstitute() function.
- launch_tasks_response_msg_t structure now contains a task_ids array
- Remove SLURM_DIST_UNKNOWN from enum task_dist_states
- job_desc_msg_t now lists a seperate addresses for the 
  RESPONSE_RESOURCE_ALLOCATION message.
- Expand the job step context concept used previously for task "spawn"
  for poe.  The step context is now also used for nomal step launch.
  New SLURM API function slurm_step_launch() and associated support
  functions.
- Fix spaghetti header #includes relating to global_srun.[ch]
- Fix slurmctld segfault when slaunch --relative is used

* Fix for slurmctld behaviour when environment is NULL on batch script launch
* Move client (srun) IO code into the API in preparation for adding
  an API call for launching a normal parallel job step.
* Rename SLURM_CRED_SIGLEN back to SLURM_IO_KEY_SIZE, but put it in a better
  header.

Fix return code handling in the src/api/signal.c code.

UCRL-CODE-2002-040 to UCRL-CODE-217948. No changes 
in any logic.

licensing. All other SLURM components are still distributed under
the GPL license.

Plus some minor code clean-up with no changes to logic.

   most of this functionality was provided by slurm_protocol_api.c
   (e.g slurm_send_recv_*_msg())

All references to header files changed to new pathname.

as needed.

moved from common into api directory.

General API code clean-up.

to cancel a job, issue the job_step_cancel RPC with a step_id
of NO_VAL.

changed function calls to match function prototype, didn't throw compile errors because they were inlined

a few cleanups in job_info and build_info

specified at submit time start with a value of 1<<16 and DPCS uses
values 1 to 0xffffffff. This preclude effective use of a max job_id
in search function, which was able to quickly indicate that a job_id
requested by DPCS was not already in use. I added a job_id hash table
to restore quick job find operations.

Modified src/api functions to build without warnings, mostly unused
variables that were declared.

coding standards (remove mixed case names, 8 character indents, removed
some comments). Still need to do some work for nesting depth. - Jette
Renamed slurm config files to lower-case names.