is not started as root, report fatal error and exit right away.

    is root for improved security.

    Ernest Artiaga, BSC.

of "scontrol show job".  We were seeing truncation on purple.

Perhaps this entire function should be rewritten to use the xstr*cat 
functions...

Another fix to make sure steps with requested nodes have correct cpus accounted for and a fix to make sure the user can't allocate more cpus than the have requested.