add rules, guidelines, fix HTML code, move compressed tarball in inventory

By changing the _inventory_order_ of the compressed tarball from
**100000** to **1415926535**, the compressed tarball will land at
the top of the secondary file list and remain still easy to find.

Updated the `manifest.numbers` spreadsheet and rebuilt
the `.entry.json` files.

Added `next/` directory to hold the next IOCCC rules and guidelines.
Added `next/README.md` that `bin/gen-top-html.sh` uses to form
the `next/index.html` file.

Added _Rules and Guidelines_ link to the sidenav bar to link to the
`next/index.html` file.

Added _IOCCC Rules_ as `next/rules.md` that `bin/gen-top-html.sh`
uses to form the `next/rules.html` file.

Added _IOCCC Guidelines_ as `next/guidelines.md` that `bin/gen-top-html.sh`
uses to form the `next/guidelines.html` file.

Changed `bin/gen-top-html.sh` VERSION from "1.2.4 2024-04-13"
to "1.3 2024-04-14".

Prevent `pandoc(1)` from interpreting the commented out language
of a markdown code block as a code class.  So a markdown such as:

````
``` <!---sh-->
...
```
````

that produced HTML of the form:

```html
<pre class="&lt;!---sh--&gt;"><code>...</code></pre>
```

will now produce HTML of the form:

```html
<pre><code>...</code></pre>
```

NOTE: Before when the language of a markdown code block
was not commented, the HTML produced by `pandoc(1)` was
oddly indented with extra whitespace on the first line
of the code block.  While commenting out the language
of the code block removed some of the odd intending,
it left a weird class in the HTML pre block that
surrounded the HTML code block.  This hack prevents
`pandoc(1)` from assigning a class to the HTML pre block.

Changed `in/md2html.sh` VERSION from "1.2.1 2024-04-13"
to "1.3 2024-04-14".

Added `make gen_sitemap` to end of both `make www` and `make
quick_www` in top level Makefile.

Ram `make www` to test under macOS and to perform the above.

**IMPORTANT NOTE**: The current `next/rules.md` and `next/guidelines.md`
are simply the 2020 IOCCC Rules and Guidelines converted into
markdown form.  There are **NOT** the Rules and Guidelines that
will be used the IOCCC MOCK, nor the next IOCCC.

TODO: Improve the `bin/gen-status.sh` tool to modify the top of the
      `next/rules.md` and `next/guidelines.md` files to keep them
      in sync with the _contest_status_ as found in `status.json`.

TODO: Improve the look and feel of the `next/rules.md` and
      `next/guidelines.md` markdown files.

2014/birken/index.html

@@ -88,6 +88,7 @@
     <div class="sidenav">
       <a href="../../news.html">IOCCC News</a>
       <a href="../../status.html">Contest status</a>
+      <a href="../../next/index.html">Rules and Guidelines</a>
       <a href="../../faq.html#submit">How to enter the IOCCC</a>
       <a href="../../faq.html">FAQ</a>
     </div>
@@ -144,20 +145,20 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 <!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
 
 <h2 id="to-build">To build:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    make</code></pre>
+<pre><code>    make</code></pre>
 <p>There is alternate code that lets you redefine the port to bind to, in case
 there is a firewall issue, and also lets you redefine the timing constant,
 <code>STARDATE</code>. See <a href="#alternate%20code">Alternate code</a> below.</p>
 <h2 id="to-use">To use:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./prog &lt; some_secret_or_something
+<pre><code>    ./prog &lt; some_secret_or_something
 
     ./prog http://host[:port]</code></pre>
 <h2 id="try">Try:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./prog &lt; README.md</code></pre>
+<pre><code>    ./prog &lt; README.md</code></pre>
 <p>or maybe:</p>
-<pre class="&lt;!---sh--&gt;"><code>    echo &quot;IOCCC 2014!&quot; | ./prog</code></pre>
+<pre><code>    echo &quot;IOCCC 2014!&quot; | ./prog</code></pre>
 <p>Next, try in another terminal, as the above one is running:</p>
-<pre class="&lt;!---sh--&gt;"><code>    ./prog http://127.0.0.1:1701</code></pre>
+<pre><code>    ./prog http://127.0.0.1:1701</code></pre>
 <p>What happens if you specify instead of a regular file something like
 <code>/dev/null</code> ?</p>
 <p>But there’s more! Try opening in a browser the same address and then see what
@@ -168,9 +169,9 @@ problem for some reason, and it also allows you to change the timing as
 described by the author. See <a href="#configuration">configuration</a> below.</p>
 <h3 id="alternate-build">Alternate build:</h3>
 <p>To specify the port to say, 31337, try:</p>
-<pre class="&lt;!---sh--&gt;"><code>    make clobber PORT=31337 alt</code></pre>
+<pre><code>    make clobber PORT=31337 alt</code></pre>
 <p>To change the timing constant, <code>STARDATE</code>, try:</p>
-<pre class="&lt;!---sh--&gt;"><code>    make clobber TIME=5000000 alt</code></pre>
+<pre><code>    make clobber TIME=5000000 alt</code></pre>
 <p>You can combine them both of course.</p>
 <h3 id="alternate-use">Alternate use:</h3>
 <p>Use <code>prog.alt</code> as you would <code>prog</code> above. Remember that ports &lt; 1024 are
@@ -194,14 +195,14 @@ a client-side downloader. The hidden transmitted data cannot be reconstructed
 or even detected from the binary content of the traffic between the client and
 the server.</p>
 <h2 id="to-use-web-server">To use web server</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./prog &lt; secret_file_to_be_downloaded</code></pre>
+<pre><code>    ./prog &lt; secret_file_to_be_downloaded</code></pre>
 <p>Try using the program’s source code as the secret file:</p>
-<pre class="&lt;!---sh--&gt;"><code>    ./prog &lt; prog.c</code></pre>
+<pre><code>    ./prog &lt; prog.c</code></pre>
 <h2 id="to-use-client-side-downloader">To use client-side downloader</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./prog http://host[:port]</code></pre>
+<pre><code>    ./prog http://host[:port]</code></pre>
 <p>The optional port defaults to 1701. If the web server instance is started on
 the same box, try:</p>
-<pre class="&lt;!---sh--&gt;"><code>    ./prog http://127.0.0.1:1701</code></pre>
+<pre><code>    ./prog http://127.0.0.1:1701</code></pre>
 <p>It will incrementally display the contents of the hidden file at a rate of
 approximately 1 baud.</p>
 <p>The client-side downloader will automatically terminate if the web server is
@@ -296,7 +297,7 @@ numerical values.</li>
 <h3 id="compiler-warnings">Compiler warnings</h3>
 <p>For space considerations, the following include statements were dropped
 resulting in compiler warnings:</p>
-<pre class="&lt;!---c--&gt;"><code>    #include &lt;asm/byteorder.h&gt;
+<pre><code>    #include &lt;asm/byteorder.h&gt;
     #include &lt;ctype.h&gt;
     #include &lt;netinet/in.h&gt;
     #include &lt;stdlib.h&gt;
@@ -333,10 +334,10 @@ resulting in compiler warnings:</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2014/birken/Makefile">Makefile</a> - entry Makefile</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2014/birken/prog.alt.c">prog.alt.c</a> - alternative source</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2014/birken/prog.orig.c">prog.orig.c</a> - original source</li>
-<li><a href="2014_birken.tar.bz2">2014_birken.tar.bz2</a> - download entry tarball</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>
+<li><a href="2014_birken.tar.bz2">2014_birken.tar.bz2</a> - download entry tarball</li>
 <li><a href="index.html">index.html</a> - this web page</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2014/birken/README.md">README.md</a> - markdown source for this web page</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2014/birken/.entry.json">.entry.json</a> - description of entry in JSON</li>