(flyspell-duplicate-distance): Doc fix; change default to 10000.

(flyspell-duplicate-distance): Doc fix; change default to 10000.
(flyspell-mode-on): Fix the welcome message to deal with
how the binding for flyspell-auto-correct-word is now made.
(flyspell-delay, flyspell-delayed-commands): Doc fixes.
(flyspell-mode-off): Kill Ispell only if it is per-buffer.

(flyspell-mode-map): Explicitly bind M-TAB.
(flyspell-auto-correct-binding): Variable deleted.
(flyspell-incorrect-face, flyspell-duplicate-face): Fix typos.
(flyspell-check-pre-word-p): Check for word syntax in previous char.
(flyspell-word): Set process-kill-without-query for Ispell.
(flyspell-region): Put region args in order; use right percantage.
(flyspell-properties-at-p): Rename arg to POS; doc fix.
(flyspell-highlight-incorrect-region):
Check flyspell-highlight-properties first.
(flyspell-highlight-duplicate-region): Likewise.
(flyspell-auto-correct-word): Doc fix.