add or improve Bugs and (Mis)features text in README.md

The entries referenced in `bugs.md` now have, below the
"To build:" section, a "Bugs and (Mis)features section text"
that matches the `bugs.md` status.

Several entries had their "STATUS" changed from:
"STATUS: INABIAF - please **DO NOT** fix" to:
"STATUS: known bug - please help us fix":

This was done because, while some of the bugs were minor,
inviting someone to try and fix the issue does nil harm.
In a few cases a more difficult bug was also changed to
the "please help us fix".

While we do NOT want to waste time fixing such entries NOW,
letting others become involved and to try to fix the entry
is a good thing as to encourages people to study the entry
and try to fix the entry.  We don't need to accept a fix
that is offered, and of the fix transforms the source in
a less than desirable way, such a fix (if accepted) could
be become a alt source code.

1995/cdua/README.md

@@ -19,6 +19,17 @@ how fast your computer is :-) (and you can also use both to see the difference).
 For this alternate, slower version, please see below.
 
 
+### Bugs and (Mis)features
+
+The current status of this entry is:
+
+```
+STATUS: INABIAF - please **DO NOT** fix
+```
+
+For more detailed information see [1995 cdua in bugs.md](/bugs.md#1995-cdua).
+
+
 ## To use:
 
 ```sh