If all queues are empty on a -global, don't print out an error.  Print a helpful "All queues are empty" message instead.
If all queues are empty on a -global, don't print out an error.  Print a
helpful "All queues are empty" message instead.

djw8605/condor,mambelli/osg-bosco-marco,htcondor/htcondor,djw8605/condor,clalancette/condor-dcloud,zhangzhehust/htcondor,bbockelm/condor-network-accounting,neurodebian/htcondor,djw8605/condor,clalancette/condor-dcloud,neurodebian/htcondor,htcondor/htcondor,djw8605/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,bbockelm/condor-network-accounting,neurodebian/htcondor,clalancette/condor-dcloud,zhangzhehust/htcondor,neurodebian/htcondor,clalancette/condor-dcloud,zhangzhehust/htcondor,mambelli/osg-bosco-marco,mambelli/osg-bosco-marco,bbockelm/condor-network-accounting,neurodebian/htcondor,djw8605/htcondor,djw8605/condor,zhangzhehust/htcondor,zhangzhehust/htcondor,htcondor/htcondor,djw8605/htcondor,neurodebian/htcondor,mambelli/osg-bosco-marco,bbockelm/condor-network-accounting,bbockelm/condor-network-accounting,djw8605/condor,clalancette/condor-dcloud,clalancette/condor-dcloud,mambelli/osg-bosco-marco,djw8605/condor,bbockelm/condor-network-accounting,bbockelm/condor-network-accounting,djw8605/htcondor,zhangzhehust/htcondor,djw8605/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,bbockelm/condor-network-accounting,mambelli/osg-bosco-marco,mambelli/osg-bosco-marco,djw8605/condor,htcondor/htcondor,djw8605/htcondor,neurodebian/htcondor,htcondor/htcondor,djw8605/htcondor,mambelli/osg-bosco-marco,zhangzhehust/htcondor,djw8605/htcondor,djw8605/htcondor,clalancette/condor-dcloud,djw8605/condor