Add doc strings for accessors for the process structure
The accessors for the process structure are missing docstrings. We should add them. And update the user manual too, if they need to be updated.
Starting November 9th, common-lisp.net's Gitlab instance has implemented a more open account policy, allowing anyone with a GitHub or Google account to create an account on our instance.
At the same time, the login policy has started to require 2-factor authentication (2FA).
See https://mailman.common-lisp.net/pipermail/clo-devel/2018-October/001232.html for discussion.