Moved job and job step specific code out of controller.c into pack.c.
Also removed build of list code (for improved speed, this will be
a very commonly used RPC).

Also fix purge of defunct job steps.

added debug statements

Set cpu count to node code on job step create.

started nbio port

 o handle error code from job step create correctly.

Fixed error checking bug in job step allocation.

Merge all error functions into slurm_errno.[ch].
Convert error codes from #define to enum.
Add function to slurmctd/locks.[ch] to kill all threads to support
immediate cleanup on fatal error
Remove partition_key from test functions, drop node configuration limits
in tests to run on small laptop.

Merge all error functions into slurm_errno.[ch].
Convert error codes from #define to enum.
Add function to slurmctd/locks.[ch] to kill all threads to support
immediate cleanup on fatal error