lib/59142: POSIX.1-2024: pthread_cond_clockwait and company

[campbell+netbsd%mumble.net@localhost]

>Number:         59142
>Category:       lib
>Synopsis:       POSIX.1-2024: pthread_cond_clockwait and company
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 06 13:45:02 +0000 2025
>Originator:     Taylor R Campbell
>Release:        current, 10, 9, ...
>Organization:
The Clock of the POSIX NowBSD
>Environment:
>Description:
POSIX.1-2024 adds several functions for timed waits determined by a clock id:

https://pubs.opengroup.org/onlinepubs/9799919799/functions/pthread_cond_clockwait.html
https://pubs.opengroup.org/onlinepubs/9799919799/functions/pthread_mutex_clocklock.html
https://pubs.opengroup.org/onlinepubs/9799919799/functions/pthread_rwlock_clockrdlock.html
https://pubs.opengroup.org/onlinepubs/9799919799/functions/pthread_rwlock_clockwrlock.html
https://pubs.opengroup.org/onlinepubs/9799919799/functions/sem_clockwait.html

These are missing from NetBSD.
>How-To-Repeat:
standards inspection

https://pubs.opengroup.org/onlinepubs/9799919799/xrat/V4_xsh_chap01.html
>Fix:
Yes, please!