Copy 1992/nathan.orig.c to nathan.alt.c

This is so one can see what the originally published code did. The
index.html has a bold important note that one should NOT send an email
to the address as it is not only no longer necessary but it is not known
if it is still valid. Unlike the index.html where the email was
omitted/redacted the alt code still has the email as the original code
as it is an exact copy thereof, including the typos in it.

Rebuilt .entry.json and index.html.

Updated .gitignore.

thanks-for-help.html

@@ -1811,14 +1811,15 @@ bugs.html</a> for details.</p>
 <h2 id="winning-entry-1992nathan">Winning entry: <a href="1992/nathan/index.html">1992/nathan</a></h2>
 <h3 id="winning-entry-source-code-nathan.c">Winning entry source code: <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1992/nathan/nathan.c">nathan.c</a></h3>
 </div>
-<p><a href="#cody">Cody</a> added the original file back as it was deemed that the export restrictions
-should no longer be a cause of concern for this entry. Doing this did require a
-change to Cody’s <a href="2020/ferguson2/index.html">2020/ferguson2</a> entry as it’s
-referenced.</p>
+<p><a href="#cody">Cody</a> added the original file back as it was deemed that the export
+restrictions should no longer be a cause of concern for this entry. An entry
+that referred to this previous code was updated and the originally published
+code is now also in <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1992/nathan.alt.c">nathan.alt.c</a>. The astute
+viewer would note that it has the same typos as the originally published code.</p>
 <p>Cody cynically noted that if he goes quiet, for instance if he no longer
 participates in the IOCCC, that it must be our fault! :-)</p>
-<p>Cody also added the <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1992/nathan/try.sh">try.sh</a> script that runs a few commands
-that we suggested as well as one he provided.</p>
+<p>Cody also added the <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1992/nathan/try.sh">try.sh</a> script that runs a
+few commands that we suggested as well as one he provided.</p>
 <div id="1992_vern">
 <h2 id="winning-entry-1992vern">Winning entry: <a href="1992/vern/index.html">1992/vern</a></h2>
 <h3 id="winning-entry-source-code-vern.c">Winning entry source code: <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1992/vern/vern.c">vern.c</a></h3>