minor improvements in fault-tolerance

I think something has changed in the way things are sent to sview since the bluegene grid was way off and so were the cpu counts per node.  These are fixed now, but the grid still doesn't color up like it should.

code. Applies only to non-batch jobs. and the bad exit code was only 
reported by "scontrol show jobs" (the exit code in accounting data 
was correct).

No change in logic.

parent, code is cleaner, patch from Mark Grondona

    general code clean-up - Mark Grondona.

(Actually a backport from v1.2 to v1.1 then merge with NEWS updated).

dramatically clean up the code.