Address references to *.hint with some exceptions

In years < 2001 (with the exception of ferguson2/) that still have
reference to *.hint files they have been changed to README.md with the
following exception: in 1998/dorssel there was a dorssel.hint2. This was
changed to dorssel.hint since the dorssel.hint was changed to README.md
a while back. The references to dorssel.hint2 were changed to without
the 2.

There was an out of date reference in faq.html file to a .hint file as
well that was updated to README.md; the dorssel2.hint in years.html was
changed to the new name.

With that the only files that have to be updated are those that are >=
2001. I still have to check for hint.* however.

years.html

@@ -2261,7 +2261,7 @@ Contest </I></FONT></CENTER>
 <UL TYPE=square>
 <LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dorssel/Makefile">Makefile</A>
 <LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dorssel/dorssel.c">dorssel.c</A>
-<LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dorssel/dorssel.hint2">dorssel.hint2</A>
+<LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dorssel/dorssel.hint">dorssel.hint</A>
 <LI><A HREF="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dorssel/README.md">README.md</A>
 </UL>
 <A NAME="1998_fanf"></A>