I do not know whether this is really necessary, but since ‘let’ should bind
variables like ‘smtpmail-smtp-server’ and the like dynamically, it feels better
to have them loaded before binding them.
This variable is called ‘db/other-gnus-accounts’ and can be set with the
customize interface. This change also obsolete ‘db/personal-gnus-filter-rules’,
is it’s definition can now be inlined directly into the one of
‘db/other-gnus-accounts’.