emacs-28 fd04009d16: Port distribution tarball to Solaris 10

[Eli Zaretskii]

branch: emacs-28
commit fd04009d167a620513fa948155c2e30040a142c2
Author: Paul Eggert <eggert@cs.ucla.edu>
Commit: Eli Zaretskii <eliz@gnu.org>

    Port distribution tarball to Solaris 10
    
    * make-dist (taropt): Use 'tar -H ustar' to generate a portable
    tar file format instead of a GNU-specific format.  Needed now that
    Emacs tarballs contain file names longer than 100 bytes, e.g.:
    
emacs-28.1/test/lisp/gnus/mml-sec-resources/private-keys-v1.d/C072AF82DCCCB9A7F1B85FFA10B802DC4ED16703.key
    
emacs-28.1/test/lisp/emacs-lisp/bytecomp-resources/error-lexical-var-with-run-hook-with-args-until-success.el
    Without this patch, extracting a tarball on Solaris 10 fails with
    many diagnostics like “tar: ././@LongLink: typeflag 'L' not
    recognized, converting to regular file”.
    
    (cherry picked from commit 4410f5d86997b6b238ff05c2ece338b28e1163b1)
---
 make-dist | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/make-dist b/make-dist
index 447e90f018..67e49382d0 100755
--- a/make-dist
+++ b/make-dist
@@ -485,6 +485,8 @@ if [ "${make_tar}" = yes ]; then
   esac
   echo "Creating tar file"
   taropt='--numeric-owner --owner=0 --group=0 --mode=go+u,go-w'
+  tar -H ustar -cf /dev/null $tempdir/src/lisp.h 2>/dev/null &&
+    taropt="$taropt -H ustar"
   tar --sort=name -cf /dev/null $tempdir/src/lisp.h 2>/dev/null &&
     taropt="$taropt --sort=name"
   [ "$verbose" = "yes" ] && taropt="$taropt --verbose"