Re: pgsql: Fix our Windows stat() emulation to handle file sizes > 4GB.

I wrote:
> I'm also confused about how to document them in the release notes.
> Alexandra should get some credit I guess for collecting and testing
> the patches, but she's not the original author(s).

After thinking for awhile, I'm going to fold all of these into one
release-note entry:

<para>
Fix misbehavior with junction points on Windows, particularly
in <application>pg_rewind</application> (Alexandra Wang)
</para>

<para>
This entailed back-patching previous fixes by Thomas Munro, Peter
Eisentraut, Alexander Lakhin, and Juan José Santamaría Flecha.
Those changes were originally not back-patched out of caution, but
they have been in use in later branches for long enough to deem
them safe.
</para>

If anyone's really unhappy with that plan, let me know.

regards, tom lane