Add try.sh/try.alt.sh template scripts

The scripts can be found under template/entry. A new FAQ entry has been
added and the guidelines have been updated.

The rules have a new div id ("version") to match what was added to
guidelines yesterday (since it's obvious what kind of version it is.

Once this has been merged html files need to be checked to make sure
everything is okay.

next/guidelines.html

@@ -465,7 +465,7 @@ writing by <a href="../contact.html">contacting the judges</a>.</p>
 </div>
 </div>
 <p class="leftbar">
-These <a href="guidelines.html">IOCCC guidelines</a> are version <strong>28.20 2024-11-26</strong>.
+These <a href="guidelines.html">IOCCC guidelines</a> are version <strong>28.21 2024-11-27</strong>.
 </p>
 <p><strong>IMPORTANT</strong>: Be <strong>SURE</strong> to read the <a href="rules.html">IOCCC rules</a>.</p>
 <p>Jump to: <a href="#">top</a></p>
@@ -1091,12 +1091,22 @@ Again, please note that in macOS, <code>/usr/bin/gcc</code> is actually <code>cl
 </div>
 </div>
 <p class="leftbar">
-We <strong>LIKE</strong> entries that use an edited variant of the
+We <strong>LIKE</strong> submissions that use an edited variant of the
 <a href="https://github.com/ioccc-src/mkiocccentry/blob/master/Makefile.example">example Makefile</a>,
 renamed as <code>Makefile</code> of course. This makes it easier for the <a href="../judges.html">IOCCC Judges</a>
 to test your submission. And if your submissions wins, it makes it easier to integrate it into
 the <a href="https://www.ioccc.org/index.html">Official IOCCC winner website</a>.
 </p>
+<p class="leftbar">
+We <strong>LIKE</strong> submissions that use an edited version of the
+<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/template/entry/try.sh">try.sh</a> template script (and if you have alternate code,
+the same applies with the <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/template/entry/try.alt.sh">try.alt.sh</a>
+template script). Of course, it is
+quite possible that only one invocation is possible, so it is not necessarily
+detrimental to your submission if you do not include one, though we do like
+interesting and creative uses of submissions. See also the
+FAQ on “<a href="../faq.html#try_scripts">submitting try.sh and try.alt.sh scripts</a>”.
+</p>
 <p>Doing masses of <code>#define</code>s to obscure the source has become ‘old’. We
 tend to ‘see thru’ masses of <code>#define</code>s due to our pre-processor tests
 that we apply. Simply abusing <code>#define</code>s or <code>-Dfoo=bar</code> won’t go as far