[issue18623] Factor out the _SuppressCoreFiles context manager

[Charles-François Natali]

Charles-François Natali added the comment:

Could you post your patch without the '--git' option?
Apparently it doesn't work well with the code review tool.

> It would be nice if there was a more explicit way to test the
> creation of core files, however.

One possibility would be to fork() a child process, and make it call os.abort(). In the parent, call os.waitpid(), and call os.WCOREDUMP() on the status.

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nosy: +neologix

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