We don't use it yet from any C source file, but the plan is to do
that. Mainly from freetype, fontconfig, and cairo, when these are
built for Windows when the --enable-headless options is used (for the
new Collabora Office).
Also some cleanups, sorting #include lines, avoiding warnings, etc.
Change-Id: Ifef3588d06fdcceaeaeb3482399737faaf558d7d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/195602
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Tested-by: Jenkins
Tor Lillqvist
b28a46aa50