bug#57386: 29.0.50; support make-symbolic-link without admin priviledge on Windows

[Eli Zaretskii]

> From: Kiên Nguyễn Quang <kien.n.quang@gmail.com>
> Date: Thu, 25 Aug 2022 03:05:37 +0900
> Cc: 57386@debbugs.gnu.org
> 
> You're right, there's a stupid check against parameters on the version that 
> doesn't support the new flag.
> Since from Windows 10, the Windows version checking is not recommended (and 
> not accurate) anymore, I
> think we can just retry if the function is called with invalid parameters.
> That will probably slow down the down-level Windows versions, but the 
> difference should not be too much.

Unfortunately, invalid parameters could cause Emacs to abort,
depending on how it was linked.  So I still think checking the version
of Windows is the way to go.  That MS don't recommend that doesn't
mean we must abide by their recommendations.