Update file for pgcrypto.

HISTORY

@@ -211,7 +211,7 @@ Hurd compile fix (Oliver Elphick)
 New /contrib/fuzzystrmatch with lievnshtein and metaphone, soundex merged (Joe Conway)
 Beos fixes (Cyril VELTER)
 Remove OID's from some system tables (Tom)
-/contrib/pgcrypto improvements (Marko Kreen)
+New functions in /contrib/pgcrypto: crypt(), hmac(), encrypt() (Marko Kreen)
 System table operator reorganization (Oleg Bartunov, Teodor Sigaev, Tom)
 Rename config.h to pg_config.h (Peter E)
 pg_log now pg_clog (Tom)