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.

2011/akari/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>
@@ -141,11 +142,11 @@ 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>
 <h2 id="to-use">To use:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./akari [ input_file | - ] [ output_file | - ]  [even]</code></pre>
+<pre><code>    ./akari [ input_file | - ] [ output_file | - ]  [even]</code></pre>
 <h2 id="try">Try:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./try.sh</code></pre>
+<pre><code>    ./try.sh</code></pre>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p><code>Akari</code> is an image downsampling utility that accepts 3 input formats:</p>
 <ul>
@@ -171,7 +172,7 @@ will read from <code>stdin</code>.</p>
 <a href="https://en.wikipedia.org/wiki/Scan_line">scanlines</a>. By default <code>Akari</code> will
 keep odd pixels on odd <a href="https://en.wikipedia.org/wiki/Scan_line">scanlines</a>.</p>
 <h3 id="examples">Examples:</h3>
-<pre class="&lt;!---sh--&gt;"><code>    gcc akari.c -o akari
+<pre><code>    gcc akari.c -o akari
     ./akari &lt; example.ppm &gt; odd_output.ppm
     ./akari - - even &lt; example.ppm &gt; even_output.ppm
     ./akari example.ppm odd_output.ppm</code></pre>
@@ -192,22 +193,22 @@ the included <a href="example.ppm">example.ppm</a>.</p>
 <p>Anything that is not parsable as <code>PGM</code> or <code>PPM</code> will be downsampled as
 ASCII art. Since the source code is formatted as ASCII art, it’s only
 natural to try:</p>
-<pre class="&lt;!---sh--&gt;"><code>    ./akari akari.c akari2.c</code></pre>
+<pre><code>    ./akari akari.c akari2.c</code></pre>
 <p><code>akari2.c</code> is also a valid C program, and accepts up to 1 argument.
 By default, this second program reads text from <code>stdin</code> and writes
 expanded output to <code>stdout</code>. If the extra argument is specified, the
 output text will also pass through a rot13 filter.</p>
-<pre class="&lt;!---sh--&gt;"><code>    gcc akari2.c -o akari2
+<pre><code>    gcc akari2.c -o akari2
     ./akari2 &lt; input.txt &gt; expanded_output.txt
     ./akari2 rot13 &lt; input.txt &gt; expanded_and_rot13_output.txt</code></pre>
 <p>You can combine the two programs together to have just a regular rot13
 filter:</p>
-<pre class="&lt;!---sh--&gt;"><code>    ./akari2 rot13 &lt; input.txt | ./akari &gt; rot13.txt</code></pre>
+<pre><code>    ./akari2 rot13 &lt; input.txt | ./akari &gt; rot13.txt</code></pre>
 <p>Of course, we wouldn’t stop with just 2 programs, you can downsample
 the source <em>again</em> and get yet another C program:</p>
-<pre class="&lt;!---sh--&gt;"><code>    ./akari &lt; akari.c | ./akari &gt; akari3.c</code></pre>
+<pre><code>    ./akari &lt; akari.c | ./akari &gt; akari3.c</code></pre>
 <p>We must go deeper:</p>
-<pre class="&lt;!---sh--&gt;"><code>    ./akari &lt; akari.c | ./akari | ./akari &gt; akari4.c</code></pre>
+<pre><code>    ./akari &lt; akari.c | ./akari | ./akari &gt; akari4.c</code></pre>
 <p><code>akari3.c</code> and <code>akari4.c</code> are still (mostly valid) C programs.
 <code>gcc -Wall</code> will output a few warnings, but still produce output
 executables. The output executables each print a message to <code>stdout</code>.</p>
@@ -243,10 +244,10 @@ a <code>brainf#$%</code> program in a C program, for example. For comparison, a
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/akari/akari.orig.c">akari.orig.c</a> - original source</li>
 <li><a href="example.ppm">example.ppm</a> - input image</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/akari/try.sh">try.sh</a> - how to run</li>
-<li><a href="2011_akari.tar.bz2">2011_akari.tar.bz2</a> - download entry tarball</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>
+<li><a href="2011_akari.tar.bz2">2011_akari.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/2011/akari/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/2011/akari/.entry.json">.entry.json</a> - description of entry in JSON</li>