Implement more careful handling of SIGCHLD.  This turns out still to not be really reliable.  The reason is that more than one SIGCHLD could happen while we are in the SIGCHLD handler.  This would result in only one pending occurrence, so some occurrences could be lost. This would likely result in deadlock in the parent if it were depending on getting exactly one occurrence of SIGCHLD for each child process.
Implement more careful handling of SIGCHLD.  This turns out still to
not be really reliable.  The reason is that more than one SIGCHLD
could happen while we are in the SIGCHLD handler.  This would result
in only one pending occurrence, so some occurrences could be lost.
This would likely result in deadlock in the parent if it were depending
on getting exactly one occurrence of SIGCHLD for each child process.

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