Use timestamp with time zone for postgres sql

Author: An Phung

_sql/postgresql/event_log_table.sql

@@ -2,7 +2,7 @@ CREATE SEQUENCE event_log_sequence;
 
 CREATE TABLE event_log (
   id INTEGER DEFAULT NEXTVAL('event_log_sequence'),
-  time TIMESTAMP NOT NULL,
+  time TIMESTAMP WITH TIME ZONE NOT NULL,
   beginstring CHAR(8) NOT NULL,
   sendercompid VARCHAR(64) NOT NULL,
   sendersubid VARCHAR(64) NOT NULL,

_sql/postgresql/messages_log_table.sql

@@ -2,7 +2,7 @@ CREATE SEQUENCE messages_log_sequence;
 
 CREATE TABLE messages_log (
   id INTEGER DEFAULT NEXTVAL('messages_log_sequence'),
-  time TIMESTAMP NOT NULL,
+  time TIMESTAMP WITH TIME ZONE NOT NULL,
   beginstring CHAR(8) NOT NULL,
   sendercompid VARCHAR(64) NOT NULL,
   sendersubid VARCHAR(64) NOT NULL,

_sql/postgresql/sessions_table.sql

@@ -7,7 +7,7 @@ CREATE TABLE sessions (
   targetsubid VARCHAR(64) NOT NULL,
   targetlocid VARCHAR(64) NOT NULL,
   session_qualifier VARCHAR(64) NOT NULL,
-  creation_time TIMESTAMP NOT NULL,
+  creation_time TIMESTAMP WITH TIME ZONE NOT NULL,
   incoming_seqnum INTEGER NOT NULL, 
   outgoing_seqnum INTEGER NOT NULL,
   PRIMARY KEY (beginstring, sendercompid, sendersubid, senderlocid,