safe version of the MySQL library is used.

when -Wextra is specified as a compile option

value of cpus-per-task into account

the --mem-per-cpu is over the system limit then automatically set
the value for --cpus-per-task and divide the --mem-per-cpu by that
same factor

 accompanied r21335

    - Persistent option selections for each tab page
    - Clean up topology in grids
    - Leverage AllowGroups and Hidden options
    - Cascade full-info popups for ease of selection

   the exit code of the job script (or salloc) while derived_ec contains the
   highest exit code of all the job steps.
-- Added SLURM_JOB_EXIT_CODE and SLURM_JOB_DERIVED_EC variables to the
   EpilogSlurmctld environment

    job specifies it's memory requirement, then more CPUs than requested will
    automatically be allocated to a job to honor the MaxMemPerCPU parameter.

#ifdef CR_DEBUG   to
if (select_debug_flags & DEBUG_FLAG_CPU_BIND)
for more flexibility in logging

  rather than debug3() for most logging 

than CR_DEBUG set at build time

    to partitions configured with AllowGroups.

    to abort.

  a user code (not slurmd, which has the symbols)

    slurm_job_step_stat() from user commands.