bug#81766: gzip-1.14.96-72fa on other platforms

[GNU gzip discussion and bug reports.]

The build succeeds and all tests pass on:

- Debian 12 / x86
- Slackware 15 / x86
- Alpine Linux 3.18 / x86
- FreeBSD 14.0 / x86
- NetBSD 10.0 / x86
- Solaris 11 OpenIndiana / x86_64 in 32-bit mode

- Linux/s390x (openSUSE 15.5) with --enable-dfltcc
- Linux/s390x (Debian 13) without --enable-dfltcc

Bruno