[issue33671] Efficient zero-copy for shutil.copy* functions (Linux, OSX and Win)

[Giampaolo Rodola']

Change by Giampaolo Rodola' <g.rodola at gmail.com>:


----------
nosy: +SilentGhost, StyXman, asvetlov, desbma, facundobatista, gps, josh.r, martin.panter, ncoghlan, neologix, petr.viktorin, pitrou, python-dev, r.david.murray, tarek, vstinner, yselivanov

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33671>
_______________________________________