add quick-readme2index.sh, improve all-run.sh and readme2index.sh

Improved `all-run.sh` and `readme2index.sh` so that
certain command line options (e.g., -p, -P, -u, -U ...)
are only passed along to other tools if they are
given on the command line.

all-run.sh VERSION changed from "1.1.1 2024-01-19"
to "1.1.2 2024-01-20",

readme2index.sh VERSION changed from "1.1 2024-01-16"
to "1.1.1 2024-01-20".

Added `quick-readme2index.sh` that only calls
`readme2index.sh` if the `index.html` is not
a non-empty file, or of either `.winner.json`
and/or `README.md` is newer than `index.html`.

Updated all `index.html` files because the
the file contains a comment that includes
the newly modified readme2index.sh VERSION.

1996/schweikh2/index.html

@@ -10,7 +10,7 @@
 <!-- -->
 <!-- END: this line ends content from: inc/top.default.html -->
 <!-- -->
-<!-- This file was formed by the tool: bin/readme2index.sh version: 1.1 2024-01-16 -->
+<!-- This file was formed by the tool: bin/readme2index.sh version: 1.1.1 2024-01-20 -->
 <!-- -->
 <!-- START: this line starts content from: inc/head.default.html -->
 
@@ -137,8 +137,8 @@ href="/temp-test-ioccc/location.html#DE">DE</a></p>
 <div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="cf">while</span> <span class="bu">:</span><span class="kw">;</span> <span class="cf">do</span> <span class="fu">grep</span> <span class="at">-v</span> <span class="st">&#39;#&#39;</span> schweikh2.c<span class="kw">;</span> <span class="cf">done</span></span></code></pre></div>
 <p>(and we do too) which works with <code>sh</code>, <code>bash</code>,
 <code>ksh</code> and <code>zsh</code> as well. Press ctrl-c to stop it.
-Observe how the <a href="try.sh">try.sh</a> script does this a number of
-times.</p>
+Observe how the <a href="try.sh">try.sh</a> script does this once to
+make it easier to see what is happening.</p>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>The original program, with only slight obfuscations, may be found in
 <a href="hunni.c">hunni.c</a>. The perl script, <a