fix chk-entry and sorting

Use of `sort(1)` with -u appears to be problematic.
As an example, using `sort -d -u` for both "c11" and "c++11"
will produce only "c11".  This where we do not strictly
need to do so, we do not use -u with `sort(1)`.

With the above, fixed `bin/chk-entry.sh -v 3 2018/burton2`
under Linux.

Changed `bin/chk-entry.sh` VERSION from "1.1.4 2024-03-26"
to "1.1.5 2024-03-27".

Changed `bin/gen-sitemap.sh` VERSION from "1.3.3 2024-03-26"
to "1.3.4 2024-03-27".

Changed `bin/output-index-inventory.sh` VERSION from "1.2.3 2024-03-26"
to "1.2.4 2024-03-27".

Changed `bin/tar-all.sh` VERSION from "1.1.2 2024-03-26"
to "1.1.3 2024-03-27".

Changed `bin/tar-year.sh` VERSION from "1.1.2 2024-03-26"
to "1.1.3 2024-03-27".

Ran `make www` to test the above.  The `index.html` for the
`2018/burton2` entry was updated.

Ran `make form_entry_tarball` to test the above.  Some recently
updated entries plus the `2018/burton2` entry was updated.

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`.

2020/.tar.tstamp

@@ -1 +1 @@
-1711433366
+1711530107

2020/ferguson1/.tar.tstamp

@@ -1 +1 @@
-1711433365
+1711530106

2020/ferguson2/.tar.tstamp

@@ -1 +1 @@
-1711433365
+1711530107