Fix assorted typos.

   option from environment and documentation of new env var.

rather than (potentially long) list supplied with job.

They are not required by the switch plugin.

even while completing.

rather than matching completing states in nodes and jobs (which fails for
shared nodes).

than old local functions.

completing nodes rather than trying to match node and job state. Matching
node and job state will provide inconsistent results for shared nodes.

   are still in completing state.
 o Document above change in manpage along with other formatting cleanup.

numbers per new change to configure.ac.

assigning it directly to a uint32_t.

   /etc/services.
 o Fix configure.ac to save default slurmctld and slurmd port numbers
   as numbers instead of strings.
 o Fix logic for determination of slurmd and slurmctld port numbers.

loadable as shared aliases. Give slurm functions a prefix of "slurm_" to
insure that no user functions with the same name is used instead.
[For some reason a this same commit a minute ago did not seem to take effect.]

 o need to compile authd module with libe

Only attempt to open files having the proper prefix. For example, slurmd
should never even try to dlopen a plugin with a prefix of "jobcomp" as
doing so both wastes time and generates undefined external errors (the
jobcomp plugin is written for the slurmctld daemon and only it has the
proper external function to dlopen that plugin).

order to interupt accept(), because this can fail if the authentication
plugin is bad or there are other communications problems. Use interrupt
instead.

  processed when job fails (e.g. due to SIGSEGV)