[Issue 21010] Windows symlinks

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21010

--- Comment #4 from starcanopy <starcanopy at protonmail.com> ---
After more thinking, and thanks to another individual, for the unittests to
properly function on all supported versions of Windows, administrative rights
must be conferred. (Developer Mode is an exclusive feature of Windows 10.)
Whether this is possible or prudent, I do no know.

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