move non-README.md HTML formation to bin/othermd2html.sh

The core of `bin/gen-other-html.sh` code that converts entry non-README.md
into HTML has been moved into a new tool: `bin/othermd2html.sh`.

The `bin/othermd2html.sh` tool will be useful to the `bin/cvt-submission.sh`
tool that is under development.

Added info about `bin/othermd2html.sh` to `bin/README.md`.

Changed `bin/gen-other-html.sh` VERSION from "1.4.1 2024-08-18"
to "1.5 2024-08-27".

HTML produced by `bin/gen-other-html.sh` now uses a "jump to" mid-bar
test now shows the `YYYY/dir/index.html` link text (with `YYYY/dir/` added).

Performed `make gen_other_html` to accomplish the above and to test under macOS.
Performed `make gen_top_html` to accomplish the above and to test under macOS.

bin/README.md

@@ -674,6 +674,27 @@ The [md2html.cfg](index.html#md2html_cfg) configuration file is
 used by [md2html.sh](%%REPO_URL%%/bin/md2html.sh) to drive the generation process.
 
 
+<div id="othermd2html">
+### [othermd2html.sh](%%REPO_URL%%/bin/othermd2html.sh)
+</div>
+
+Convert a non-README.md file in an entry to HTML.
+
+Usage:
+
+``` <!---sh-->
+    bin/othermd2html.sh YYYY/dir/pathto.md
+```
+
+For example:
+
+``` <!---sh-->
+    bin/othermd2html.sh -v 1 2020/ferguson1/chocolate-cake.md
+```
+
+The [othermd2html.sh](#othermd2html) tool is used by [gen-other-html.sh](#gen-other-html).
+
+
 <div id="output-index-author">
 ### [output-index-author.sh](%%REPO_URL%%/bin/output-index-author.sh)
 </div>