slurm_send_recv_node_msg(), slurm_send_recv_rc_msg(), etc.
 o Fixed fd leak in agent.c using slurm_send_recv_rc_msg() w/ timeout.

   slurm_protocol_socket_implementation.c
 o Added new functions slurm_send_recv*rc_msg() for handing common
   mode of sending a message and receiving only a "return code" message.
 o Overhauled existing code and performed general cleanup.

All references to header files changed to new pathname.

New RPC added for slurmd to send batch_sid to slurmctld.

New RPC defined to map local pid into slurm job id.

common needs to read anyway to route communications (avoid second read
by other tools).

read_config functions.

bad message. Functions now return SLURM_ERROR on bad unpack instead
of assert failure.

(so shutdown command can shutdown both servers).

a slurm_addr.

that includes a buffer pointer, size, and offset. The buffer is automatically
expanded as space is needed.

removed old send/recv buffer calls, they weren't being used and aren't compatible with the new auth credential transport changes

adde fcntl to slurm_protocol for non-blocking io

Merge all error functions into slurm_errno.[ch].
Convert error codes from #define to enum.

   of directly to a stream.

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

moved a few more signal calls to posix standard sigaction

Updated comments in slurm_protocol_api.h

Changed (removed, added, renamed) configuration parameters.

Moved around some functions and definitions to make strings
available to API functions and scontrol.

These are transport layer specific routines and thus are defined in the api.h
and implemented in the socket, mongo implementations classes

Implemented new slurm_api_init that takes a configuration object containing pri and sec controller address and the default port to connect to

added function docs from c files

These function encapsulate more hid underlying complexity from the application programmer