(still needs some work for scalability).

* Memory leak in slurm_cred.c, added EVP_MD_CTX_cleanup().
* Pthread stack size too small on AIX. Resulting in stack corruption
  and ugly failure modes. Added slurm_attr_init to macros.h to
  explicitly set the stack size  for all pthreads.
* /dev/urandom not present on AIX, use rand() as needed instead in
  constructing a credential. Used in "srun --join".
* getsockopt(Socket, Level, SO_ERROR, &err, OptionLenght) sometime
  returns an error code of -1. This causes an assert failure in
  slurmd/io.c:_update_error_state().
* Function aliasing is not working on AIX. It is being turned off
  via a variable in config.h and "#if" logic in macros.h and
  slurm_xlator.h.
* dlopen failing if plugins reference any functions not present in
  caller. This may be fixed with the LDFLAG "-Wl,-bgcbypass=1000"
  being added for the slurm commands (avoid garbage collection of
  unused functions).
* read() is sometimes generates EAGAIN error, which was not handled
  in some places.
* vsnprintf() for string NULL is printing "" instead of "(null)"
  as produced by snprintf(). More format printing was added to log.c
  to produce more consistent log messages.
* poll() takes a timeout of -1 for unlimited rather than any negative
  number. Modify logic that was always multiplying by 1000 to convert
  usec to msec.
* getopt_long keyword table was not NULL terminated, resulting in
  segfault with invalid command-line argument in most commands.
* xmalloc module assert failures were not generating a core file.
  Changed "fatal();abort();" to "error();abort();".
* Change msg timeout from 3 sec to 5 sec. Running everything on single
  AIX node was very slow.

alloca() has been replace by malloc() and free(),
Use of __progname eliminated,
GNU compliant malloc() wrapper added,
RLIMIT_* definition use controlled by #ifdef's,
Changed some data types, and conditionally added some #includes.

from slurm_open_stream (which is only called by slurmd/io.c to connect
stdin/out/err).
(gnats:253)

is zero.

client and server are both reusing ports that match a defunct socket
connection in TIME_WAIT state. On this failure, we select a new random
port number and try again to connect.
(gnats:253)

from 2 to 5 seconds for slow tdev.

type debug.

descriptors. This was needed in several grouped functions (e.g.
slurm_send_recv_rc_msg and slurm_send_only_node_msg, which combine
open, send, receive, and close functions for simplicity).

of socket communications. Previously was sometimes overwriting legitimate
SLURM error code with fcntl error code of EINTR.

occur naturally if a srun, scontrol, scancel, sinfo, or squeue command is
killed by the user with a communication to slurmctld in progress. This
seems to occur fairly regularly as part of batch job termination.

send/receive, function (poll, timeout, send, recv, etc), and the error message
are all reported.

specifically to slurm controller.

 o Fix -Wall warnings

   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.

 o srun/ : place temporary fix for stdout nonblocking I/O problem

interrupts were resetting timeout in I/O functions with timeout.

   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

 o fix _STMT_START in macros.h
 o remove annoying "Interrupted system call" debug error for accept()
   with slurm_protocol_socket_implementation.c
 o fix some assert macros in xassert and xmalloc

from conman.

than 1024 file descriptors the select function call silently fails
and corrupts memory.

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

   blown away in v1.57.
 o fix bug in _slurm_set_addr_char() which caused port and family to
   be updated even though gethostbyname() failed.

(so shutdown command can shutdown both servers).

 o rewrite of slurmd.c -- extensive changes therein
 o launch msg contains port numbers instead of slurm_addrs

a slurm_addr.

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

_slurm_msg_sendto was not advancing the buffer pointer or decreasing the
   xmit size if the message could not be transmitted in a single send request.
_slurm_msg_recvfrom_timeout was leaving data on the socket and not reporting
   any errors if the buffer was too small for the data presented.