See previous reversion commit for rationale.

...somewhat ironically.

https://lists.gnu.org/archive/html/groff/2022-05/msg00067.html

* Put the Git tagging item at the end of the procedure, and provide an
  example command.
* Update Unicode data import example so people don't worry that we
  forgot about Unicode 14.

* FOR-RELEASE: Split-off ChangeLog files need to be added to the
  distribution archive.

* HACKING: Clarify non-ChangeLoggable items.  Generally, an item that
  resolves a Savannah ticket should be ChangeLogged even if it would not
  normally meet that threshold.  Also clarify a point in an example; we
  certainly expect table entries containing the word "FOOBAR" to show up
  that way when formatted.

* INSTALL.REPO: Correct prose description of what to do with unpacked
  "gnulib" snapshot.

* README: Clarify that the '.version' file is produced by the build
  process.  Clarify origins and provenance of various groff components.
  Use a more appropriate URL for the Savannah issue tracker.  Lightly
  recast.

We should document the commit hash of the gnulib submodule we use
because it is missing from the snapshot archives produced by
Savannah/cgit.

Integrate it with our "new" (post-2014) Automake-based build system.

* src/utils/xtotroff/Makefile.in: Delete relic of old build system.
  Also, it had a bug: it generated X11 output device 'DESC' files with a
  "unitwidth 10" directive even for the "-12" devices, which is not
  correct (the in-tree DESC files we've been shipping for years were
  nevertheless correct, apparently fixed by hand by James Clark in groff
  1.07 [March 1993]).

* src/utils/xtotroff/xtotroff.am: Define `xtotroff` variable for use by
  X11 font description generation targets below.

* font/devX100-12/devX100-12.am [!WITHOUT_X11]:
* font/devX100/devX100.am [!WITHOUT_X11]:
* font/devX75-12/devX75-12.am [!WITHOUT_X11]:
* font/devX75/devX75.am [!WITHOUT_X11]: Define devX*_fontdir variables
  here.

* font/devX100-12/devX100-12.am:
* font/devX100/devX100.am:
* font/devX75-12/devX75-12.am:
* font/devX75/devX75.am: Add new (phony) targets, variously named
  "devX{100,100_12,75,75_12}-font-descriptions", to generate the
  corresponding output device's DESC file and run xtotroff(1) to
  generate its font description files.  Be sure to set the correct
  "unitwidth" for the "-12" devices.  Add new dependency-only rule
  "maintainer-font-descriptions" depending on these new targets for
  convenience (and future expansion to devps and devlj4).  Add new
  devX*_fontsrcdir variable to distinguish the source directory for the
  font description files, and use it in the devX*_font-descriptions
  targets.

* FOR-RELEASE: Document existence of "maintainer-font-descriptions" Make
  target and when to run it.

Running this target with the aforementioned bug fix, overwriting the
in-tree DESC and font description files using data gathered from a
running X server, results in no changes whatsoever.  Say what you will
about X11 core font technology--it's stable.

squash Refactor X11 font description generation.

* update-copyright.sh: use gnulib's 'update-copyright' script.  Pass
  this script in directories 'arch', 'contrib', 'font', 'man', 'tmac',
  'src' and on a list of extra files.

* FOR-RELEASE: mention this point.