lib/59467: Missing POSIX sig2str(3) & str2sig(3) calls

[rbranco%suse.de@localhost]

>Number:         59467
>Category:       lib
>Synopsis:       Missing POSIX sig2str(3) & str2sig(3) calls
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    lib-bug-people
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 15 13:25:00 +0000 2025
>Originator:     Ricardo Branco
>Release:        NetBSD 10.99.12
>Organization:
>Environment:
NetBSD netbsdx.fritz.box 10.99.12 NetBSD 10.99.12 (CUSTOM) amd64

>Description:
Missing POSIX sig2str(3) & str2sig(3) calls.  These calls are already present in FreeBSD, Illumos & GNUlib.

If there's interest in landing this, I can add the missing bits: ssp(3) instrumentation and optionally adapt fstat, kill & others.
>How-To-Repeat:

>Fix:
https://github.com/NetBSD/src/pull/52