structure.

DOWN or DRAIN state and not responding. Changed logic to clear NO_RESPOND
flag before proceeding with logic.

slurmctld restart).

reading job info.

Use it directly from  backfill plugin (instead of API call).

attempt failure (i.e. convert to event driven instead of just polling).
It does still have a 2-second timer to keep the overhead reasonable.

state saves, backfill scheduler runs, etc. when there was not a significant
state change that should trigger those events.

"SchedAuth" and "SchedPort".

be changed whenever a node responded to a "ping" and other insignificant
events, which resulted in the backfill scheduling running more frequently
than required.

The plugin now gets passed the then current maximum priority to use as a
basis for setting the new job's priority (or not...).

Save and restore batch script's argc & argv across slurmctld restarts.

Convert all accessors to use exclusively pointers; this should fix many of the 64-bit incompatibility problems

Plus some minor code clean-up with no changes to logic.

for NULL values. Remove redundant code.

 o remove unneeded #include from interconnect.h