Added comments about where markdown content came from

The HTML files now include a comment indicating from where the main
part of the markdown content.

Changed `bin/gen-other-html.sh` VERSION from "1.0 2024-02-27"
to "1.0.1 2024-03-08".

Changed `bin/gen-top-html.sh` VERSION from "1.2 2024-02-29"
to "1.2.1 2024-03-08".

Changed `bin/gen-year-index.sh` VERSION from "1.0.1 2024-02-23"
to "1.0.2 2024-03-08".

Changed `bin/md2html.sh` VERSION from "1.0.1 2024-02-23"
to "1.1 2024-03-08".

Changed `bin/quick-readme2index.sh` VERSION from "1.1.1 2024-02-23"
to "1.1.2 2024-03-08".

1992/index.html

@@ -11,6 +11,7 @@
 <!-- END: this line ends content from: inc/top.default.html -->
 <!-- -->
 <!-- The original markdown content was formed by the tool: unspecified -->
+<!-- The main part of the markdown content came from: 1992/README.md -->
 <!-- The HTML was converted from markdown by the tool: bin/md2html.sh -->
 <!-- -->
 <!-- START: this line starts content from: inc/head.default.html -->
@@ -130,11 +131,14 @@ compilers had problems optimizing certain entries. Some compilers do
 optimize, but the resulting program does not work. By default we have
 left off <code>-O</code> from compile lines. You might want to add
 <code>-O</code> back, or add it back for certain entries where
-performance is important.</p>
+performance is important. (This was updated to use <code>-O3</code> in
+202n though sometimes an entry does not work if the compiler optimises
+the code and in this case it is disabled or explicitly set to level
+0.)</p>
 <p>This year marked an all time high for number of entries as well as
 the quality of entries. Nearly twice the usual number of entries made it
 to the final judging rounds. Even when we raised the standards for
-winning, we still wound up giving out a few more awards than in other
+winning, we still wound up giving out a few more awards than in previous
 years. The new size rules size probably contributed to the overall high
 quality.</p>
 <p>FYI: By tradition, we do not record the count of the number entries,