Add small doc mention that libpq is named after POSTQUEL.

diff --git a/doc/src/sgml/history.sgml b/doc/src/sgml/history.sgml
index 9bd5c22d8edc4804e74bfcd5a63d95f01fbd2316..a7f4b701ead98e00d8fd32b84c8e94f58a79139e 100644 (file)
--- a/doc/src/sgml/history.sgml
+++ b/doc/src/sgml/history.sgml
@@ -114,7 +114,9 @@
     
      
       The query language PostQUEL was replaced with
-      SQL (implemented in the server).  Subqueries
+      SQL (implemented in the server).  (Interface
+      library libpq was named after PostQUEL.)
+      Subqueries
       were not supported until PostgreSQL
       (see below), but they could be imitated in
       Postgres95 with user-defined