Reapply revision 1.56, which does the following: Let people use dashes along with underscores for the external cache options
Reapply revision 1.56, which does the following:
Let people use dashes along with underscores for the external cache
options

This change had been undone by revision 1.58.

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