yes: Add zero copy fast-path

[oech3]

target/release/yes-main |pv>/dev/null
^C.9GiB 0:00:08 [4.96GiB/s]
target/release/yes-zero |pv>/dev/null
^C.4GiB 0:00:09 [10.4GiB/s]

[Edit]

target/release/yes|pv >/dev/null
^C60GiB 0:00:13 [21.2GiB/s]

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/tty/tty-eof (fails in this run but passes in the 'main' branch)
Congrats! The gnu test tests/pr/bounded-memory is now passing!

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/pr/bounded-memory (was skipped on 'main', now failing)

[xtqqczze]

What is the impact on binaries size?

[oech3]

+3240 byte. But why is size high prior more than perf? Also rustix is already dep of clap. I can restrict this to 64bit glibc if size is really important.

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/pr/bounded-memory (fails in this run but passes in the 'main' branch)
Congrats! The gnu test tests/rm/isatty is no longer failing!
Note: The gnu test tests/cp/link-heap is now being skipped but was previously passing.
Congrats! The gnu test tests/seq/seq-epipe is now passing!

[xtqqczze]

I guess we want this for parity with coreutils/coreutils@2b1c059

Was the implementation not possible using nix instead of rustix?

[oech3]

I was considering zero-copy before GNU do (just lacking time to do...).
nix is depending on rustix which means we could drop nix dep in the future (see #9549).

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/tail/pipe-f. tests/tail/pipe-f is passing on 'main'. Maybe you have to rebase?
Skip an intermittent issue tests/cut/bounded-memory (fails in this run but passes in the 'main' branch)
Skip an intermittent issue tests/date/date-locale-hour (fails in this run but passes in the 'main' branch)
Note: The gnu test tests/csplit/csplit-heap is now being skipped but was previously passing.

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/pr/bounded-memory (fails in this run but passes in the 'main' branch)
Skipping an intermittent issue tests/date/date-locale-hour (passes in this run but fails in the 'main' branch)