+The original code quoted single quotes as \' which is documented as valid in
+the O'Reilly book "Practical PostgreSQL" (first edition) as an alternative to
+the SQL standard '' way of representing a single quote as data. However, in
+June 2006 there was some security issue with using \' and so this has been
+changed.
+
+[Note: There is a function called PQescapeStringConn() that quotes strings.
+This cannot be used because it needs a PGconn argument (the connection handle).
+Why, I don't know. Seems odd for just string escaping...]
+