[3.12] gh-106948: Add standard external names to nitpick_ignore (GH-106949) (#107060)

* [3.12] gh-106948: Add standard external names to nitpick_ignore (GH-106949)

It includes standard C types, macros and variables like "size_t",
"LONG_MAX" and "errno", and standard environment variables like "PATH".

(cherry picked from commit f8b7fe2f2647813ae8249675a80e59c117d30fe1)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

* Delete 2023-05-31-18-37-57.gh-issue-105156.R4El5V.rst