(#6644)  ... except on the new CentOS 7 machines, which /doesn't/ have D_CATEGORY.  Make that optional.
(#6644)  ... except on the new CentOS 7 machines, which /doesn't/ have D_CATEGORY.  Make that optional.

htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor