Try to load libslurm.so only when necessary.
The code tries to load libslurm.so even if precedent dlopen calls
succeeded. The code is structured so that we have to "return;" as
soon as a dlopen succeeds.
Update NEWS file and fix compiler warning:
suggest parentheses around assignment used as truth value.
Update NEWS file
Set noe state to DOWN on reboot

When nodes scheduled for reboot, set state to DOWN rather than FUTURE so
they are still visible to sinfo. State set to IDLE after reboot completes.
bug 1007
Merge branch 'slurm-14.03'