[issue8879] Implement os.link on Windows

[Hirokazu Yamamoto]

Hirokazu Yamamoto <ocean-city at m2.ccsnet.ne.jp> added the comment:

With following implementation, issamefile return True
for hard link. I heard GetFinalPathNameByHandle
returns different paths for hard links.

>>> import nt, os
>>> def issamefile(path1, path2):
...     fd1 = os.open(path1, os.O_RDONLY)
...     fd2 = os.open(path2, os.O_RDONLY)
...     fi1 = nt._getfileinformation(fd1)
...     fi2 = nt._getfileinformation(fd2)
...     os.close(fd1)
...     os.close(fd2)
...     return fi1 == fi2
...
>>> issamefile("src.txt", "lnk.txt")
True

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nosy: +ocean-city

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8879>
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