It makes a hb_face_t from IDWriteFontFace, useful when using
DirectWrite facilities for font selection, loading and rendering
but using harfbuzz for shaping.

Fixes https://github.com/harfbuzz/harfbuzz/issues/1596

in case called immediately after init()

It is rather confusing to have script, language etc, in hb-common section
while feature is in hb-shape section. I keep looking for it in hb-common
section then using the API index because I can’t find it there.

Fixed a small typo.
[skip ci]

Copied and edited from the util option documentation. The docbook table
syntax is too verbose, but that is the best I can come up with.

CFF more arrayof fixes

[subset] Implement --retain-gids with CFF/CFF2

Wish there was a way to streamline this :(.

For some reasons djgpp doesn't understand "unsigned int" can be same
with one of uint*_t anyway so lets do that for it explicitly.

Just to note, our CI's djgpp is based GCC 7.2.0 and isn't old.

it is always true when building on APPLE systems
and this file only builds on APPLE systems

Doesn't play well with CircleCI apparently

https://circleci.com/gh/harfbuzz/harfbuzz/74289

https://voidlinux.org/ is yet another and different distro written from scratch, thus completely eligible to have a bot here!

Seriously however not that useful yet however but I will try to overload it other tasks later, like our other bots.

No test yet also, couldn't install cairo-devel, will try to fix that later.

Their harfbuzz package source: https://github.com/void-linux/void-packages/blob/master/srcpkgs/harfbuzz/template

so in sync with fonttools behavior

hb-coretext.cc: clean up macosx test