[bug #63867] Port to older versions of gnu tar.

[Dmitry Goncharov]

Follow-up Comment #1, bug #63867 (project make):

GNU tar versions before 1.28 do not accept option --sort. Given --sort, older
tar exits with an error message and gzip creates an archive with an empty
file.

++++
13 Tests in 9 Categories Failed (See .diff* files in work dir for details)
:-(

tar: unrecognized option '--sort=name'
tar: unrecognized option '--sort=name'
Try 'tar --help' or 'tar --usage' for more information.
Try 'tar --help' or 'tar --usage' for more information.
tar: unrecognized option '--sort=name'
Try 'tar --help' or 'tar --usage' for more information.
*** Testing FAILED!  Details: makeerror-4.4.1-x86_64-pc-linux-gnu-fdgi.tar.gz
*** Please report to <bug-make@gnu.org>
----


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