autoupdate as part of the
autoreconf CI job ensures
configure.ac being in line with Autoconf syntax best practices.
Changes in fa6cd603 were made by
autoupdate, except for the
win32utils/Configure change, and the
m4_define([bind_PKG_VERSION]... change, which is needed for the BIND version being set correctly in the ARMv9 PDF (reStructuredText -> \LaTeX -> PDF).
autoupdate changes on
v9_11 seems too extensive to be integrated.