[tex4ht] [bug #259] mathtools and starred version of a DeclarePaireDelimiter macro

[Michal Hoftich]

> When running through a normal (html) run, the image is still shown
> as subscript, but that is in fact completely unrelated to mathtools since
> $c^{2} \left(a^{2}+b\right)$ will render exactly the same.
>

It isn't really subscript, but the fact that image is not correctly
vertically aligned to the baseline. c^2 is rendered as text, but \left
... \right causes to render the enclosed content as image. This is one
of the main causes why mathml should be used for math in web pages.

Michal