bpo-34605: Replace "pliant children" with "helpers"

[vstinner]

In distutils.command.install, replace "pliant children" (previously,
it was "pliant slaves") with "helpers".

https://bugs.python.org/issue34605

[vstinner]

Copy of @gvanrossum comment:

I Googled a bit and it seems "pliant slave" is an old-fashioned way to refer to slaves, and even more demeaning than just "slave" -- I presume it was meant ironically by the original author. We should really replace the entire construct "pliant slaves" with a more neutral term. I don't think "children" is the right term -- I propose "helpers".

#9101 (comment)

[ericvsmith]

Looks good.

[miss-islington]

@vstinner: Status check is done, and it's a success ✅ .

[brettcannon]

@dolkensp your insult at Victor about his English skills is uncalled for; you simply could have pointed out that SEO would be affected.

Consider this a warning that insulting people is not tolerated under the Code of Conduct and if it happens again there will be ramifications.

[pitrou]

Interesting. As a non-native English speaker myself, I would say that hesitating between "childs" and "children" is a sign that maybe one should wait for comments before merging a language-tweaking PR. Just saying ;-)