git mv *.hint -> README.md

There is one exception:

    $ find . -name '*.hint' -execdir git mv '{}' README.md \;
    git statufatal: destination exists, source=1992/albert/albert.hint, destination=1992/albert/README.md

Looking at the two files they differ quite a bit so I've not changed it.
I'll bring this up on GitHub.

1989/roemer/README.md

@@ -0,0 +1,29 @@
+Best layout:
+
+	Lievaart, Roemer B.
+	VU-Informatica, Amsterdam
+	Marcusstraat 29/2, 
+	NL 1091 TJ Amsterdam
+	Netherlands
+
+Judges notes:
+
+	Do you know what this program does?  If you do, look again,
+	there is more here than meets the PI.
+
+Selected notes from the author:
+
+	Passes lint, but not with the strictest options, for it
+	contains some "null-statements", as well two identifiers
+	which are, if compilers only take 6 characters, the same.  It
+	also uses write(2), so not totally system independent.
+
+	You are very much invited to pass this program through a
+	C-beautifier. (First strip newlines and tabs, if your cb can't
+	do that.)
+
+Copyright (c) 1989, Landon Curt Noll & Larry Bassel.
+All Rights Reserved.  Permission for personal, educational or non-profit use is
+granted provided this this copyright and notice are included in its entirety
+and remains unaltered.  All other uses must receive prior permission in writing
+from both Landon Curt Noll and Larry Bassel.