ota: Merge 20240623 (bsd-features) from ota 9f971fba471b

Merge from upstream. The system-status test was modifed upstream, but it
still doesn't fit into ATF, so those changes weren't brought in.

Fr

ota: Merge 20240623 (bsd-features) from ota 9f971fba471b

Merge from upstream. The system-status test was modifed upstream, but it
still doesn't fit into ATF, so those changes weren't brought in.

From FIXES:

Jun 23, 2024
Fix signal for system-status test. Thanks to Tim van der Molen.
Rewrite if-else chain as switch. Thanks to Andrew Sukach.

May 27, 2024
Spelling fixes and removal of unneeded prototypes and extern.
Thanks to Jonathan Gray.

May 4, 2024
Fixed a use-after-free bug with ARGV for "delete ARGV".
Also ENVtab is no longer global. Thanks to Benjamin Sturz
for spotting the ARGV issue and Todd Miller for the fix.

May 3, 2024:
Remove warnings when compiling with g++. Thanks to Arnold Robbins.

Sponsored by: Netflix

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ota: Merge one true awk 20240422 (a3b68e649d2d)

Apr 22, 2024:
fixed regex engine gototab reallocation issue that was
introduced during the Nov 24 rewrite. Thanks to Arnold Robbins.
Fixed a scan b

ota: Merge one true awk 20240422 (a3b68e649d2d)

Apr 22, 2024:
fixed regex engine gototab reallocation issue that was
introduced during the Nov 24 rewrite. Thanks to Arnold Robbins.
Fixed a scan bug in split in the case the separator is a single
character. thanks to Oguz Ismail for spotting the issue.

Mar 10, 2024:
fixed use-after-free bug in fnematch due to adjbuf invalidating
the pointers to buf. thanks to github user caffe3 for spotting
the issue and providing a fix, and to Miguel Pineiro Jr.
for the alternative fix.
MAX_UTF_BYTES in fnematch has been replaced with awk_mb_cur_max.
thanks to Miguel Pineiro Jr.

Sponsored by: Netflix

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