8.4 to 8.6 upgrade doc:  Hopefully finished version.
8.4 to 8.6 upgrade doc:  Hopefully finished version.

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