o various small bugfixes.

Move getnodename to common/hostlist, function is equivalent to
     gethostname, but strips off everything after first "."
slurmd to use getnodename now

Move getnodename to common/hostlist, function is equivalent to
     gethostname, but strips off everything after first "."

Translate "localhost" in node configuration inforo and partition
node list to actual node name.
Reduce size on allocate test to something that will run on PC.

Translate "localhost" in node configuration inforo and partition
node list to actual node name.

Translated "localhost" in partition node list to actual node name.

Add slurm_addr to node record, set values and send credential revoke.

2- finished adding the job_step message stuff...

fixed launch_task_response msg
added slurm_protocol and slurmd errnos to slurm_errno.h
added print_slurm_addr to src/common/slurm_protocol_api.c
added print_slurm_credential to src/common/slurm_protocol_util.c
cleaned up debug printing and error reporting for src/slurmd/shmem_struct.c
more cleanup
etc

added a few comments and slurm_protocol_errno entries.
More little code cleanup

2- changed a typedef for step_spec ot reflect changes in slurm_protocol_defs

2- Cleaned up the .h file

RPC is used to distinguish it from the SHUTDOWN RPC comming from scontrol.
It was added to deal with a race condition.
Kevin's change in where pthread_create occurs and how the RPC is
processed is now the default (#ifdef kevins_way removed).
Added limit on the thread count before going to non-threaded RPCs
(see MAX_THREAD_COUNT in controller.c).