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.

1988/litmaath/README.md

@@ -0,0 +1,36 @@
+Best small program:
+
+	Maarten Litmaath
+	Free University (VU) Amsterdam
+	Department of computer science
+	Uilenstede 72
+	1183 AK Amstelveen
+	The Netherlands
+
+Try: litmaath eschew obfuscation
+
+Note the unusual structure:
+
+	 while (<condition>)
+		 ;
+
+Did you notice that the body is empty?
+
+The best one can do to understand how the program works is to give it
+two small strings as arguments, and follow the program closely.  One
+could make the body of the 'while' loop an 'fprintf' with interesting
+variables like:
+
+    fprintf(stderr,
+	     "argv=%lo *argv=%lo **argv=%c argv[1]=%lo *argv[1]=%c argc=%d\n",
+	     (long) argv, (long) *argv, *argv && **argv ? **argv : '@',
+	     (long) argv[1], argv[1] && *argv[1] ? *argv[1] : '@', argc);
+
+Furthermore, it's interesting to note that only two variables are
+used to achieve everything.
+
+Copyright (c) 1988, 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.