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.

1998/bas1/README.md

@@ -0,0 +1,78 @@
+Best Encapsulation:
+
+    Bas de Bakker
+    Pica, Centre for Library Automation
+    Statenweg 154 B    (home address)
+    3039 JN Rotterdam
+    The Netherlands
+
+
+Judges' comments:
+
+    To build:
+
+	make bas1
+
+    To use:
+
+	If lpr on your system can print PostScript:
+
+	    ./bas1 | gunzip | lpr
+
+	else, while in X Window System,
+
+	    ./bas1 | gunzip | gv -
+	or:
+	    ./bas1 | gunzip | gs -sDEVICE=pgmraw -sOutputFile='|xv -' -
+
+    The output is supposed to be a 3D maze, but it is somewhat more
+    than that. If you've seen any of the Maurits Escher's works,
+    you'll know what we're talking about.
+
+    When trying to run the program with command line arguments, be generous.
+
+
+Selected Author's Comments:
+
+    BEMAZING
+    ========
+
+    "You're in a twisty little maze of beams, all different."
+
+    Bemazing is "amazing" taken one step (letter) further.  Bemazing
+    creates a 3D maze of beams.  Try to go from the entrance (the
+    unfinished beam in one corner) to the exit (the unfinished beam in the
+    opposite corner) or vice versa.
+
+    For maximum portability, Bemazing is not tied to any window system,
+    but creates postscript.  The picture it makes will fit on either A4 or
+    letter size paper.
+
+    In addition, because postscript is rather verbose, Bemazing creates
+    the postscript in gzip format, in order to save precious bits on your
+    hard disk for the latest version of GNU Emacs (after all, you wouldn't
+    want to use an editor without a psychoanalyze-pinhead function, now
+    would you).  Again for maximum portability, Bemazing will take special
+    care that the binary output will not contain any newline or return
+    characters that may get weird treatment on systems that do not use the
+    One True Line Separator.
+
+    NOTES
+    =====
+
+    Be sure to view the source with something that can display characters
+    \240-\377.  Use LESSCHARSET=latin1, M-x standard-display-european in
+    GNU Emacs etc.  The source does not use characters in the range
+    \200-\237 (we are not an unnamed word processor that tends to create
+    HTML containing these control characters).
+
+    Because this is not the obfuscated postscript contest, the postscript
+    does not contain any "for", "if" or other control structures.  All the
+    logic is in the C code.  There are only a few straightforward "def"s,
+    because otherwise the output would become much larger.
+
+    Try running Bemazing with command line arguments and see what
+    happens.  (But note that the program only guarantees that there
+    actually is a route from entrance to exit if you run it without
+    command line arguments.)
+