type-break does not work with emacs21 [patch included]

[Jorgen Schaefer]

Hi there!
type-break.el, as shipped with GNU Emacs 21, does not set
type-break-emacs-variant for GNU Emacs 21, which means it won't
use timer functions at all. The appended patch fixes this (and
will work for future emacsen, too), though it would probably be
wise to use a different approach than to base the usage on
emacs-version (e.g. try to require the different files if
possible, and decide on the fboundp'ness of different functions).

Greetings,
        -- Jorgen

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type-break.diff
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