Move 199[1-3]/ant and 2015/howe alt code

The unobfuscated code, which was put in deobfuscated/, has been turned
into alt code. In one case the already existing alt code was made alt2
and the unobfuscated code was alt. In the case of the ones with two C
files there, the one that did not require modification (to compile in
modern systems) were used as those are original.

In a few cases these changes suggested additional files: a test suite
Makefile for the alt code, a try.alt.sh script and maybe some other
things besides.

The bug status was updated for 2015/howe with a known bug: in particular
the test scripts do not work (at least not completely).

In the manifest all references (except for a file name that has not been
renamed - at least not yet) of 'deobfuscated' to 'unobfuscated': a minor
detail that might not matter much but it sounds ever so slightly better
(maybe). These other entries that had an entry_text change were
1995/garry and 2020/endoh2. Rebuilt .entry.json and index.html files for
this (and in the case of the moved code the index.html files also had to
be changed for that in addition to the Makefiles).

1991/ant/index.html

@@ -403,9 +403,9 @@ Location: <a href="../../location.html#CA">CA</a> - <em>Canada</em></li>
 <!-- BEFORE: 1st line of markdown file: 1991/ant/README.md -->
 <h2 id="to-build">To build:</h2>
 <pre><code>    make all</code></pre>
-<p>There is an alternate version that might feel a bit more familiar to vi(m)
-users. Additionally, the author provided deobfuscated versions including one for
-C89. See <a href="#alternate-code">Alternate code</a> below.</p>
+<p>The author provided an unobfuscated version and there is an alternate version
+that might feel a bit more familiar to vi(m) users. See <a href="#alternate-code">Alternate
+code</a> below.</p>
 <h2 id="to-use">To use:</h2>
 <pre><code>    ./ant some_file</code></pre>
 <p>NOTE: the file must already exist and not specifying any arg will make the
@@ -416,28 +416,23 @@ program exit without doing anything.</p>
 <pre><code>    make mole
     ./ant mole</code></pre>
 <h2 id="alternate-code">Alternate code:</h2>
-<p>The author provided us with deobfuscated versions including one for C89. The two
-C files in <code>deobfuscated</code>,
-<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/deobfuscated/ant.c">deobfuscated/ant.c</a> and
-<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/deobfuscated/ant-c89.c">deobfuscated/ant-c89.c</a> and the
-<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/deobfuscated/Makefile">deobfuscated/Makefile</a> will allow
-you to look at them and compile them if you wish. These are exactly like the
-original in every way, including in use, except they are deobfuscated.</p>
-<p>The other version, <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.alt.c">ant.alt.c</a> changes the
-commands slightly so that to go to the first column you should enter <code>0</code>, to go
-to the last column you should enter <code>$</code>, to quit you should enter <code>q</code>, to go
-back a word you should enter <code>b</code> and to go forwards a word you should enter <code>w</code>.
-Also, and perhaps most useful, rather than having to hit ctrl-L (form-feed,
-<code>\f</code>) to get back to command mode you can use the usual ESC (<code>\x1b</code>).</p>
-<p>These will make it slightly less unwieldy for those familiar with vi(m); the
-rest was unchanged.</p>
+<p>The author provided us with an unobfuscated version,
+<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.alt.c">ant.alt.c</a>.</p>
+<p>The other alternate version, <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.alt2.c">ant.alt2.c</a>
+changes the commands slightly so that to go to the first column you should enter
+<code>0</code>, to go to the last column you should enter <code>$</code>, to quit you should enter
+<code>q</code>, to go back a word you should enter <code>b</code> and to go forwards a word you should
+enter <code>w</code>. Also, and perhaps most useful, rather than having to hit ctrl-L
+(form-feed, <code>\f</code>) to get back to command mode you can use the usual ESC
+(<code>\x1b</code>); the author explains why this was not originally done in their remarks
+below. These slight modifications will make it slightly less unwieldy for those
+familiar with vi(m); the rest was unchanged.</p>
 <h3 id="alternate-build">Alternate build:</h3>
 <pre><code>    make alt</code></pre>
 <h3 id="alternate-use">Alternate use:</h3>
-<p>For the deobfuscated versions, use <code>ant.alt2</code> and <code>ant.alt2-c89</code> as you would
-<code>ant</code> above; for the other one, <code>ant.alt</code>, use it as you would <code>ant</code> above but
-with the changes in the input keys described above. See the author’s remarks for
-the remaining commands.</p>
+<p>For the unobfuscated version, use <code>ant.alt</code> as you would <code>ant</code> above; for the
+other one, use <code>ant.alt2</code> as you would <code>ant</code> above but with the changes in the
+input keys described above. See the author’s remarks for the remaining commands.</p>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>The author was kind enough to supply a list of references below,
 in case you are still confused after read the source! :-)</p>
@@ -548,11 +543,9 @@ ISBN 0-13-822305-X, chapter 5</p>
 <ul>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.c">ant.c</a> - entry source code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/Makefile">Makefile</a> - entry Makefile</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.alt.c">ant.alt.c</a> - alternate source code</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.alt2.c">ant.alt2.c</a> - alternate source code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.orig.c">ant.orig.c</a> - original source code</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/deobfuscated/ant-c89.c">deobfuscated/ant-c89.c</a> - author provided deobfuscated code converted from K&amp;R</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/deobfuscated/ant.c">deobfuscated/ant.c</a> - author provided deobfuscated code</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/deobfuscated/Makefile">deobfuscated/Makefile</a> - author provided Makefile for deobfuscated code</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.alt.c">ant.alt.c</a> - author provided unobfuscated code</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>