commit afffca193b69ea5eb42f5e7273d48a6a82eb7e37
Author: Satoshi Nagayasu <snaga@uptime.jp>
Date:   Thu Jul 9 03:42:31 2015 +0000

    Fix to expose "Log_disconnections" GUC variable to the outside postgres.c.

diff --git a/src/include/postmaster/postmaster.h b/src/include/postmaster/postmaster.h
index d160304..4c76f30 100644
--- a/src/include/postmaster/postmaster.h
+++ b/src/include/postmaster/postmaster.h
@@ -25,6 +25,7 @@ extern bool ClientAuthInProgress;
 extern int	PreAuthDelay;
 extern int	AuthenticationTimeout;
 extern bool Log_connections;
+extern bool Log_disconnections;
 extern bool log_hostname;
 extern bool enable_bonjour;
 extern char *bonjour_name;