[HarfBuzz] Building and testing HarfBuzz 2.3.0 on MinGW

[Eli Zaretskii]

> From: Nathan Willis <nwillis at glyphography.com>
> Date: Mon, 4 Feb 2019 12:28:02 +0000
> Cc: harfbuzz at lists.freedesktop.org
> 
> On Sat, Jan 26, 2019 at 5:35 PM Eli Zaretskii <eliz at gnu.org> wrote:
> 
>  1) It would be good to have some guidance in some README or in the
>  HTML docs regarding the optional dependencies and configuration
>  options, and their significance.  For example, it turns out Glib is
>  needed to run a large portion of the test suite, something that wasn't
>  clear (I initially concluded that I didn't need Glib at all).  Also,
>  hb-shape is not built if Glib isn't available.  Similarly, hb-view is
>  not build unless both Cairo and cairo-ft are available.
> 
> I added https://harfbuzz.github.io/building.html#configuration a few weeks ago; would you mind elaborating on
> what is missing there from your POV?

Hi,

I didn't forget, I just have my plate full.  Will respond in a few
days.