+PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
+ but not after initializing Perl.
+
+PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
+ output them only if debugging. By default they are written stderr,
+ apparently, which is not desirable.
+
+PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
+ queries.
+