rewrite bin/tar-entry.sh

We rewrote the `bin/tar-entry.sh` algorithm so that we do NOT have
to require Linux to produce a compressed tarball that is byte-for-byte
identical to a macOS compressed tarball for the same entry.

Changed `bin/tar-entry.sh` VERSION from "1.2 2024-03-22"
to "1.3 2024-03-25".

Added `bin/untar-entry.sh` to untar an entry from the
compressed tarball.

Added `make untar_entry_tarball` to untar all entry files.

Added `make untar_year_tarball` and `make untar_all_tarball`
stub Makefile rules.  The core it referred to does not yet exist.

Updated IOCCC manifest.  Updated `.entry.json` for `2004/sds`.

Performed `make www` to update web pages.  In most cases the
entry `index.html` added an inventory link for the new `.tar.tstamp` file.

Performed `form_entry_tarball` to complete the test of the above.

TODO: Test the results under Linux.

TODO: Update `bin/tar-year.sh`.  Update year level compressed tarballs.

TODO: Update `bin/tar-all.sh`.  Update top level compressed tarball.

TODO: Write `bin/untar-year.sh` and `bin/untar-all.sh`.

2004/sds/.entry.json

@@ -41,6 +41,14 @@
 	    "display_via_github" : true,
 	    "entry_text" : "how to run"
 	},
+	{
+	    "file_path" : "README_sds.txt",
+	    "inventory_order" : 200,
+	    "OK_to_edit" : true,
+	    "display_as" : "test",
+	    "display_via_github" : true,
+	    "entry_text" : "sample data used by try.sh"
+	},
 	{
 	    "file_path" : "2004_sds.tar.bz2",
 	    "inventory_order" : 100000,

2004/sds/.tar.tstamp

@@ -1 +1 @@
-1711177843
+1711431284

2004/sds/README_sds.txt

@@ -1,3 +1,11 @@
+# NOT AN OFFICIAL README
+
+NOTE: This is a copy of README.md as it was in 2024 Jan 15.
+
+For the official README see [README.md](README.md) or
+view [index.html](index.html).
+
+
 ## To build:
 
 ```sh

2004/sds/index.html

@@ -231,6 +231,7 @@ GNU C.</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/sds/Makefile">Makefile</a> - entry Makefile</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/sds/sds.orig.c">sds.orig.c</a> - original source</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/sds/try.sh">try.sh</a> - how to run</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/sds/README_sds.txt">README_sds.txt</a> - sample data used by try.sh</li>
 <li><a href="2004_sds.tar.bz2">2004_sds.tar.bz2</a> - download entry source</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
@@ -240,6 +241,7 @@ GNU C.</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/sds/.entry.json">.entry.json</a> - description of entry in JSON</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/sds/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
 <li><a href=".path">.path</a> - directory path from top directory</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/sds/.tar.tstamp">.tar.tstamp</a> - timestamp of compressed tarball formation</li>
 </ul>
 
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