sched/builtin for better efficiency

    counter for larger job sizes. Patch from Hongjia Cao, NUDT.

leaving the bug in place. namely if a node has insufficient memory to
allocate any CPUs on an otherwise usable node.

so I changed the ".1" suffix to just "*".

    the same time when daylight savings time starts or ends in the interim.

better setting of updated blocks/jobs also fixed bug where block would never be freed in simulation mode