Some general code clean-up too.

 o slurmd shared memory fixes -- no longer detach/reattach around interconnect_init
 o put slurm.lock in spooldir by default
 o slurmd daemonize is now the default
 o log.c fixes -- use a shorter timestamp in logfiles

nodes requested)

Report MaxTime for jobs by default. Report priority in float format.
Permit users to specifiy all job states with "--states=all".

 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

the stack got too large.

Major clean-up of slurm_protocol_pack (not finished, but about half done).

for mutex lock/unlock with error messages.