e5730b26f0
Use strtonum(3) instead of atoi(3) MFC: r286289 Introduce -P0, creating as many concurrent processes as possible Relnotes: yes MFC: r286461 Fix regression in xargs -Px, add more regression tests MFC: r287004 MFC: r287005 Fix the racy xargs -P0 -n2 test added in r286289 PR: 199976 Submitted by: Nikolai Lifanov <lifanov@mail.lifanov.com>