emacs-27 a3d316b: Update information about refcards

[Eli Zaretskii]

branch: emacs-27
commit a3d316bbb7b432e21def2bdcee58bf36ca73bd75
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    Update information about refcards
    
    * admin/release-process (refcards):
    * admin/make-tarball.txt (refcards): Update information about
    generating refcards and required TeX/LaTeX packages.
---
 admin/make-tarball.txt | 12 ++++++++----
 admin/release-process  |  5 +++--
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/admin/make-tarball.txt b/admin/make-tarball.txt
index 64c6170..2c81a49 100644
--- a/admin/make-tarball.txt
+++ b/admin/make-tarball.txt
@@ -87,10 +87,14 @@ General steps (for each step, check for possible errors):
      make -C etc/refcards
      make -C etc/refcards clean
 
-    If some of the non-English etc/refcards fail to build, you
-    probably need to install some TeX foreign language packages.
-    For more information, search for the string "refcard" in the file
-    admin/release-process.
+    If some of the etc/refcards, especially the non-English ones, fail
+    to build, you probably need to install some TeX/LaTeX packages, in
+    particular for foreign language support.  For more information,
+    search for the string "refcard" in the file admin/release-process.
+
+    (ru-refcard causes numerous "Underfull hbox" and "Overfull hbox"
+    messages from TeX, but those seem to be harmless, as the result
+    looks just fine.)
 
 5.  Copy lisp/loaddefs.el to lisp/ldefs-boot.el.
 
diff --git a/admin/release-process b/admin/release-process
index a1f42f0..74e401b 100644
--- a/admin/release-process
+++ b/admin/release-process
@@ -179,8 +179,9 @@ What paper size are the English versions supposed to be on?
 On Debian testing, the packages texlive-lang-czechslovak and
 texlive-lang-polish will let you generate the cs-* and sk-* pdfs.
 (You may need texlive-lang-cyrillic, texlive-lang-german,
-and texlive-fonts-extra for others.)  On Fedora-like systems,
-texlive-lh may help.
+and texlive-fonts-extra for others.)  Gnus refcards need
+texlive-latex-extra and/or texlive-latex-recommended.  On Fedora-like
+systems, texlive-lh may help.
 
 ** Ask maintainers of refcard translations to update them.