Correct misattribution of earthdistance module --- according to its

old README file, Bruno Wolff did the bulk of the work, but for some
reason only Hal Snyder was credited here.

Author: tglsfdc

contrib/README

@@ -53,12 +53,12 @@ dict_xsyn -
 	by Sergey Karpov <[email protected]>
 
 earthdistance -
-	Operator for computing earth distance between two points
-	by Hal Snyder <[email protected]>
+	Functions for computing distances between two points on Earth
+        by Bruno Wolff III <[email protected]> and Hal Snyder <[email protected]>
 
 fuzzystrmatch -
 	Levenshtein, metaphone, and soundex fuzzy string matching
-	by Joe Conway <[email protected]>, Joel Burton <[email protected]>
+	by Joe Conway <[email protected]> and Joel Burton <[email protected]>
 
 hstore -
 	Module for storing (key, value) pairs