Remove vestigial plugins rather than updating them for changes in
switch plugin logic necessitated for IBM NRT interface.

Prior code assumed even task distribution (as required by switch/elan).

The local pnsd daemons cache recently used job keys and there re-use after a short period of time generates errors

If job network field contains lapi or pami, set switch network protocol
appropriately

Parse job's network option to set NRT switch user_space and ipv4
flags appropriately.

Transfter an NRT network_id on job registration from slurmd to slurmctld
and have slurmctld pick and xmit back to slurmd the network_id to be
loaded for a starting job

Add job name to call. Add logging for call.

by default on a 64bit system.  This was used with AIX back in the day and
is no longer relavant.