Almost working, but there's a bug in the relaying.
Also, made tor hidden service setup pick a random port, to make it harder
to port scan.
This commit was sponsored by Boyd Stephen Smith Jr. on Patreon.
Note that this does not yet use SecureMem. It would probably make sense for
the Password part of a CredPair to use SecureMem, and making that change
is better than passing in a String and having it converted to SecureMem in
this code.
