If aspell (or a spell-fu acceptable equivalent) warn the user. If it
failed to bind +spell-correct-interface, and bind that.
Remove previous hack. It prevents use of +spell/correct if spell-fu does
not try to highlight a word. This is extreamly common is docstrings, for
example. I think having +spell/correct should check any word it is
called upon, even without general text highlighting.
ea16bb66c3