[Issue 17889] Cross platform function to redirect standard input/output

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=17889

--- Comment #2 from RazvanN <razvan.nitu1305 at gmail.com> ---
I was actually refering to dup2:

[1] http://man7.org/linux/man-pages/man2/dup.2.html
[2] https://msdn.microsoft.com/en-us/library/8syseb29.aspx

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