Move Makefile.entry to Makefile.example

The file template/entry/Makefile.entry was moved to
next/Makefile.example. This matches the mkiocccentry repo in filename
and where it was before (template/entry) is not the right place as that
is for the template of making submissions into a winning entry whereas
next/ is for the next contest. The next/ seems like the most logical
place because the example file could be updated per contest for whatever
reason, perhaps by adding the year in it (or not). On the other hand,
the try.sh in template/entry is for submitters too but since the
bin/cvt-submission.sh script will copy the template files to a winning
entry if it does not exist it is left in template/entry, even if this
might not be ideal.

The references to the old Makefile.entry have been updated to
Makefile.example in the new path/filename.

Other changes had to be made too including updates to
bin/cvt-submission.sh. That script should be checked to make sure
everything is okay but as I have no way to test it that might have to be
done by the judges though I think it is okay.

Html files that have been changed that might need to be checked are:

0.    faq.html (this one especially should be checked)
1.    next/guidelines.html (though the judges will be checking this more)
2.    next/rules.html (though the judges will be checking this more)

For the faq.html file, the Makefile.example and try.sh/try.alt.sh
scripts should be downloaded, not linked to on GitHub and it needs to be
clear that one should use the Makefile.example from the website (this
repo) rather than the out of date mkiocccentry repo.

For the guidelines and rules, and especially the guidelines, any files
linked should also be downloaded and not linked to GitHub. The text
should be clear already but it might be good to have a quick pass. The
judges will be going over these files before the next contest too. The
files should be downloaded here too, not linked to GitHub as submitters
need to download the files to make use of.

The thanks-for-help.html file was slightly modified but should be fine
too. In this case the GitHub file should be linked to.

The version of the rules and guidelines are from an earlier date of when
they were last modified for the above changes (as this was worked on
over a number of days).

next/rules.html

@@ -466,7 +466,7 @@ writing by <a href="../contact.html">contacting the judges</a>.</p>
 </div>
 <p>Jump to: <a href="#">top</a></p>
 <p class="leftbar">
-These <a href="rules.html">IOCCC rules</a> are version <strong>28.10 2024-10-25</strong>.
+These <a href="rules.html">IOCCC rules</a> are version <strong>28.11 2024-12-01</strong>.
 </p>
 <p><strong>IMPORTANT</strong>: Be sure to read the <a href="guidelines.html">IOCCC guidelines</a>.</p>
 <p>Jump to: <a href="#">top</a></p>
@@ -905,7 +905,7 @@ those requirements.
 <p class="leftbar">
 The <code>Makefile</code> <strong>MUST</strong> be a <strong>non</strong>-empty file in <strong><a href="https://www.gnu.org/software/make/manual/make.html">GNU
 Makefile</a></strong> form. See the
-<a href="https://github.com/ioccc-src/mkiocccentry/blob/master/Makefile.example">Makefile.example</a>,
+<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/next/Makefile.example">Makefile.example</a>,
 the
 FAQ on “<a href="../faq.html#submission_makefiles">submission Makefile</a>”
 and the
@@ -1092,7 +1092,7 @@ make(1) compatibility the IOCCC
 supports</a> for more details.</p>
 <p class="leftbar">
 You are <strong>ENCOURAGED</strong> to use
-<a href="https://github.com/ioccc-src/mkiocccentry/blob/master/Makefile.example">Makefile.example</a>,
+<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/next/Makefile.example">Makefile.example</a>,
 renamed as <code>Makefile</code> of course, for help in constructing your <code>Makefile</code>.
 </p>
 <p>The target of the Makefile must be called <code>prog</code>. The original