Merge branch 'ps/meson-with-breaking-changes'

Update meson based build procedure for breaking changes support.

* ps/meson-with-breaking-changes:
  meson: don't install git-pack-redundant(1) docs with breaking changes
  meson: don't compile git-pack-redundant(1) with breaking changes
  meson: define WITH_BREAKING_CHANGES when enabling breaking changes

diff --cc Documentation/meson.build
Simple merge

diff --cc meson.build
Simple merge