Fix bugs with getHostFromAddr() and complex sinful strings. #5659
Fix bugs with getHostFromAddr() and complex sinful strings. #5659

getHostFromAddr() fouled up handling sinful strings that had an IPv6
address in the supplemental portion (the part after the '?').

neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,htcondor/htcondor,neurodebian/htcondor,htcondor/htcondor,htcondor/htcondor,neurodebian/htcondor