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/westley/README.md

@@ -0,0 +1,32 @@
+Best layout:
+
+    	Merlyn LeRoy (Brian Westley)
+	Rosemount, Inc.
+	1121 Hamline Ave. N. #17
+	St. Paul, MN  
+	55108
+	U.S.A.
+
+Compile and execute without arguments.
+
+Note: Your compiler must parse
+
+		#define _ -a
+		-_
+
+      as "--a" and not "-(-a)" or some other tokenized form.  Some strictly
+      conforming ANSI C Preprocessors may object to this: for such
+      compilers, you can elide the nonstandard token-pasting requirement
+      by changing the #define line to:
+
+		#define _ F-->00||F-OO--;
+
+You might enjoy looking at the output of:
+
+	cc -E westley.c
+
+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.