Avoid leaving behind STARTD_SLOT_EXPRS when they become undefined. Previously, if slot1 contained an attribute A only while it was running a job, and A was in STARTD_SLOT_EXPRS, then slot2 would continue to have slot1_A defined even after A went away from the slot1 ad.  This condition lasted until a reconfig.
Avoid leaving behind STARTD_SLOT_EXPRS when they become undefined.
Previously, if slot1 contained an attribute A only while it was running a job,
and A was in STARTD_SLOT_EXPRS, then slot2 would continue to have slot1_A
defined even after A went away from the slot1 ad.  This condition lasted
until a reconfig.

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