dot/gnus-local.el.distorted: Fix Gnus configuration after upgrade.
I'm dropping compatibility with old Gnuses.
* Use `starttls' where possible for communicating with IMAP servers.
Alas, that doesn't include Gmail.
* Remove the attempt to use separate authentication files for
different accounts. Everything is now in `~/.gnus.authinfo', and
IMAP credentials are keyed by server label, not address, for some
reason.
* Note that chiark doesn't have a proper certificate. For some
reason, `starttls-extra-arguments' in IMAP server stanze is a list,
while in SMTP server stanze, it's a string.
~mdw / profile / commit