coreutils: update to 9.5.

[iFoundSilentHouse]

• I tested the changes in this PR: briefly
• I built this PR locally for my native architecture, (x86_64-glibc)
• I built this PR locally for these architectures:
  • aarch64-musl

Split buffer bug was fixed in coreutils/coreutils@c4c5ed8 commit. So patch no longer needed

[classabbyamp]

I tested the changes in this PR: briefly

something as core as coreutils should be tested more than briefly

[iFoundSilentHouse]

How can I prevent make_check from skipping locally when cross-compiling? Or it's better to create separate x86_64-musl masterdir?

[classabbyamp]

you can't run tests when cross-compiling

see the readme for the musl masterdir

[iFoundSilentHouse]

Tests /tests that fail locally on x86_64-musl : join, expr, cut, uniq, dd/no-allocate.
Tests /gnulib-tests that fail locally on x86_64-musl: canonicalize, test-getcwd.sh, test-getlogin.

In CI: only gnulib-tests/canonicalize with test-canonicalize.c:411: assertion 'strcmp (result1, "//") == 0' failed

[iFoundSilentHouse]

test-canonicalize.c patch source: https://www.mail-archive.com/bug-coreutils%40gnu.org/msg33507.html

[iFoundSilentHouse]

I'm already using it for 5 days, though imo it needs more testing. @classabbyamp would you mind adding needs-testing label to this PR?

[iFoundSilentHouse]

Which changes were tested:

• cp, mv, cat, split, sort. This utils were changed fundamentally.
• mv --exchange
• env -a
• chgrp --from=OWNER:GROUP

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