bug#1122: say how to turn OFF auto-fill with local variables

[Glenn Morris]

The manual says:

  Next, suppose you don't want Auto Fill mode turned on in LaTeX mode,
  which is one of the modes based on Text mode. You can do this with the
  following additional line:

     (add-hook 'latex-mode-hook (lambda () (auto-fill-mode -1)))

and

  You can also use file-local variables to specify buffer-local minor
  modes, by using `eval' specifications.  For example, this first
  nonblank line puts the buffer in Lisp mode and enables Auto-Fill mode:

     ; -*- mode: Lisp; eval: (auto-fill-mode 1); -*-


That covers everything that needs to be covered.