move `loadOsLibrary` and `unloadOsLibrary` to `os_util`.

[aarongreig]

based on this comment #14145 (comment)

[aarongreig]

addressed by #14791

[kbenzie]

@AlexeySachkov I've assigned this to yourself since you opened #15491 intending to resolve this.

[AlexeySachkov]

@AlexeySachkov I've assigned this to yourself since you opened #15491 intending to resolve this.

Feel free to grab that PR to complete it if you have some spare time :)

I see some failures on Windows, but I wasn't able to reproduce them locally in my latest attempt to look into it.
I'm fine with it being assigned to me, but the PR is in my backlog, I'm not working on it actively at the moment (just so we are on the same page about the status).

[kbenzie]

Feel free to grab that PR to complete it if you have some spare time :)

This is a sorely lacking resource!

I'm fine with it being assigned to me, but the PR is in my backlog, I'm not working on it actively at the moment (just so we are on the same page about the status).

I don't think there's any rush.

[github-actions]

Hi! There have been no updates for at least the last 90 days, though the issue has assignee(s).

@AlexeySachkov, could you please take one of the following actions:

• provide an update if you have any
• unassign yourself if you're not looking / going to look into this issue
• mark this issue with the 'confirmed' label if you have confirmed the problem/request and our team should work on it
• close the issue if it has been resolved
• take any other suitable action.

Thanks!

[github-actions]

Hi! There have been no updates for at least the last 90 days, though the issue has assignee(s).

@AlexeySachkov, could you please take one of the following actions:

• provide an update if you have any
• unassign yourself if you're not looking / going to look into this issue
• mark this issue with the 'confirmed' label if you have confirmed the problem/request and our team should work on it
• close the issue if it has been resolved
• take any other suitable action.

Thanks!