mkfifo: error when non-file permission mode set

[w007878]

resolves #10318

Now the behavior aligned with GNU coreutils

$ ./uutils/mkfifo -m 4999 testfifo
mkfifo: invalid mode: invalid digit found in string
$ ./uutils/mkfifo -m 4777 testfifo
mkfifo: mode must specify only file permission bits

GNU:

$ ./gnu/mkfifo -m 4999 testfifo
mkfifo: invalid mode
$ ./gnu/mkfifo -m 4777 testfifo
mkfifo: mode must specify only file permission bits

[codspeed-hq]

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing w007878:fix/mkfifo (0b7d547) with main (00f77cc)}

Summary

✅ 142 untouched benchmarks
⏩ 180 skipped benchmarks¹

Footnotes

1. 180 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/tail/follow-name (fails in this run but passes in the 'main' branch)
Congrats! The gnu test tests/dd/stderr is no longer failing!
Congrats! The gnu test tests/tac/tac-2-nonseekable is no longer failing!
Congrats! The gnu test tests/tail/follow-stdin is no longer failing!

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/misc/unexpand is no longer failing!