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.

1991/cdupont/README.md

@@ -0,0 +1,54 @@
+Most Useful Label:
+
+	Christian Dupont
+	Ecole Normale Superieure de Lyon,
+	Laboratoire d'Informatique Parallele
+	42, Rue H.Berlioz 
+	69009 Lyon 
+	France
+
+
+Judges' comments:
+
+    Make and run as follows:
+
+	make cdupont
+	cdupont
+
+    Why is the following label necessary?
+    
+	sorryfor_this_unused_but_very_needed_label:
+
+    Notice that if you C beautify (cb) or pre-process this program, it
+    will no longer work correctly, or at all.  (go ahead, try it... :-))
+
+    NOTE: Due to minor problems with some ANSI C compilers, we have
+	  supplied a more portable ANSI version.  See the top level
+	  README file for details.
+
+    NOTE: One should remove the final trailing newline to obtain the
+	  original source file.  This step is not needed to compile
+	  this entry.
+
+
+Selected notes from the author:
+
+    Spoiler, rot13 to read:
+
+    Gur fbhepr pbqr ubyqf gur yrggref bs gur zrffntr. Rnpu yrggre, pbzovarq
+    jvgu nabgure xrl yrggre, vf hfrq gb pbzchgr gur pbbeqvangrf bs gur arkg
+    yrggre naq xrl. Guhf, gur zrffntr vf pbqr.  Gung vf jul V hfr fvyyl 
+    pbzzragf, zbfg bsgra onqyl fcnprq.
+
+    Gur fcnpr punenpgre frdhrapr orgjrra gur jbeqf vf tvira ol n fvzcyr
+    pbzchgngvba ba na bpgny pbafgnag (tvira urer nf na urk inyhr, bs
+    pbhefr).
+
+    Guvf jnl, nal zrffntr pna or zvkrq vagb n pbqr, fvapr gur xrlf nyybj
+    lbh gb cynpr gur zrnavatshy yrggref jurerire lbh jnag.
+
+Copyright (c) 1991, 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.