yes: no hang with fcntl failure

[oech3]

Don't hang with strace -o /dev/null -e inject=fcntl:error=ENOSYS yes by checking pipe size. The error does not appear on the daily usage. But it should be avoided. It was accidentally avoided by incorrect assumption for stdout.

This bypasses File::from of uucore::pipes::pipe. So use RawWriter to allow using write_all.

Checking pipe size is not required for other splice(2)ing utils.

[github-actions]

GNU testsuite comparison:

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

[xtqqczze]

Why do we call fcntl_setpipe_size three times?

[oech3]

Is File guaranteed that is unbuffered?

[xtqqczze]

It is documented that std::fs::File does not buffer reads and writes.