purged from the system if its front-end node goes down.

database, and the job is running on a small block make sure we free up
the correct node count.

A core based reservation can not use nodes with job running.
A node can be used by two reservations overlapping in time.

Conflicts:
	doc/html/accounting.shtml

No change in content

Based upon work by Jason Sollom, Cray Inc. and used by permission

This addresses bug 130

with a job running or trying to run on it.

are planning on using the block.  Previously it would fail those jobs
erroneously.

Conflicts:
	src/plugins/select/bluegene/bl_bgq/bridge_status.cc