[Issue 17912] Add function to std.file for creating a temporary file with a name

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=17912

--- Comment #1 from Jonathan M Davis <issues.dlang at jmdavisProg.com> ---
https://github.com/dlang/phobos/pull/5788

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