Revert all keepalive moves, reevaluate.

src/backend/libpq/pqcomm.c

@@ -30,7 +30,7 @@
  * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- *	$PostgreSQL: pgsql/src/backend/libpq/pqcomm.c,v 1.207 2010/03/13 16:40:38 momjian Exp $
+ *	$PostgreSQL: pgsql/src/backend/libpq/pqcomm.c,v 1.208 2010/03/13 16:56:37 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1346,10 +1346,10 @@ pq_getkeepalivesidle(Port *port)
 int
 pq_setkeepalivesidle(int idle, Port *port)
 {
-#ifdef TCP_KEEPIDLE
 	if (port == NULL || IS_AF_UNIX(port->laddr.addr.ss_family))
 		return STATUS_OK;
 
+#ifdef TCP_KEEPIDLE
 	if (idle == port->keepalives_idle)
 		return STATUS_OK;
 
@@ -1418,10 +1418,10 @@ pq_getkeepalivesinterval(Port *port)
 int
 pq_setkeepalivesinterval(int interval, Port *port)
 {
-#ifdef TCP_KEEPINTVL
 	if (port == NULL || IS_AF_UNIX(port->laddr.addr.ss_family))
 		return STATUS_OK;
 
+#ifdef TCP_KEEPINTVL
 	if (interval == port->keepalives_interval)
 		return STATUS_OK;
 
@@ -1490,10 +1490,10 @@ pq_getkeepalivescount(Port *port)
 int
 pq_setkeepalivescount(int count, Port *port)
 {
-#ifdef TCP_KEEPCNT
 	if (port == NULL || IS_AF_UNIX(port->laddr.addr.ss_family))
 		return STATUS_OK;
 
+#ifdef TCP_KEEPCNT
 	if (count == port->keepalives_count)
 		return STATUS_OK;