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

a slurm_addr.
slurmd uses getpeername on launch communications to route all communications
over the same network.

a slurm_addr.

   changed to err/in/out, fixes for inclusion of pthreads and SSL libraries
   etc.

Fix comment typos.
Add LLNL disclaimers. --No changes to any logic

Fix comment typos.

to use.
Srun to use slurm_addr's from allocate RPC except in the event of no allocation
(-Z option), where it generates slurm_addr's itself.

to use.

and NodeAddr. These represent the network addresses for ControlMachine,
BackupController, and NodeName records respectively.

for various values of cpus_per_task.

   (file descriptor manipulation routines)
 o added mutex utility macros to macros.h

for some calls to indicate all jobs).