Add bugs.md back to repo

The rationale is that it'll become a html file on the main site and
having www.ioccc.org/BUGS.html seems less ideal than
www.ioccc.org/bugs.html though I suppose this is only subjectively
better esp as many distributions of software have a BUGS file (and in
fact I had such a file in 2020/ferguson1 but now it's lower case). Still
this can be debated later I suppose.

bugs.md

@@ -0,0 +1,18 @@
+# BUGS and (mis)FEATURES
+
+There are a number of known problems with IOCCC winners: many of
+which have to do with differences between today's compiler environments
+and those of today.  In some cases the original code has a bug, some
+of which were recently discovered.  In some cases attempt to port
+older code to more modern environments introduced bugs.
+
+The following is a known list of **BUGS and (mis)FEATURES** in IOCCC winners.
+
+Can you fix/improve them?  You are **VERY WELCOME** to try.
+Please submit your fixes fix a [GitHub pull request](https://github.com/ioccc-src/temp-test-ioccc/pulls).
+
+We will be happy to credit those who submit successful [GitHub pull requests](https://github.com/ioccc-src/temp-test-ioccc/pulls) in the entry's _README.md_.
+
+## 1984/mullender
+
+This entry is likely to fail and/or dump core on any computer other.