Move check for qstat error in blahp's pbs_status.sh.

It appears SLURM's qstat can exit 153 without printing anything to
stderr. So check for exit 153 before checking for empty stderr.

From the OSG Jira CAMPUS-93
Follow symlinks when doing Bosco cluster installation.

Add -K option to the rsync for bosco final install. This will preserve
symlinks on the target system, if they exist.  Important for systems
which symlink the bosco directory to another area.

From OSG Jira CAMPUS-92