SIGCHLD causes failure to parse swapon output, which causes the schedd to crash.  Added code to block SIGCHLD when parsing swapon output.
SIGCHLD causes failure to parse swapon output, which causes the schedd to
crash.  Added code to block SIGCHLD when parsing swapon output.

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