Split openFileForRead into Windows and Unix versions

[Reid Kleckner]

LGTM

We could pass FILE_SHARE_DELETE/WRITE to pretend to be more POSIX
filesystem-y, but that's really futile and all the other native tools block
file writes and deletes anyway.


On Wed, Jul 17, 2013 at 12:54 AM, Rafael Espíndola <
rafael.espindola at gmail.com> wrote:

> I am not completely convinced about this, but is has some advantages:
>
> * Lets us use native, utf16 windows functions.
> * Easy to produce good errors on windows about trying to use a
> directory when we want a file.
> * Simplifies the unix version a bit.
>
> What do you think?
>
> Cheers,
> Rafael
>
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