[issue12183] Document behaviour of shutil.copy2 and copystat with symlinks

[Senthil Kumaran]

Senthil Kumaran <senthil at uthcode.com> added the comment:

When shutil.copy2 already says that it's behavior is equivalent to cp -p, will adding this sentence

+   Symbolic links are not preserved. The contents and metadata of the
+   linked files are copied instead.

Not actively confuse the user?  Because cp -p's behavior includes that and I dont see a special mention without giving more details is going to help.

The other portion of the patch seems okay to me.

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nosy: +orsenthil

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