Release 3.4.16

Set TCP_NODELAY and non blocking to frontend socket. (Tatsuo Ishii)

TCP_NODELAY is employed by PostgreSQL , so do we it.

Change systemd service file to use STOP_OPTS=" -m fast" . (Bo Peng)

Change pgpool_setup to add restore_command in recovery.conf . (Bo Peng)

Fix segfault when %a is in log_line_prefix and debug message is on. ( bug 376 ) (Tatsuo Ishii)

Fix queries hanging in parse_before_bind with extended protocol and replication + load-balancing. ( bug 377 ) (Tatsuo Ishii)