[MINOR] swapped the queued and active sessions in the logs

It was not natural to read sess/pend/lsess/psess in the logs, so before
the feature became official, I've swapped them to read :

   pend/sess/lsess/psess

Where <pend> is the overall number of pending connections on this instance,
including all the servers queues, <sess> is the number of sessions remaining
active on the server when the log was emitted (after the end of the session,
or after parsing the request), <lsess> and <psess> are the number of active
sessions on the listener and on the process respectively.
diff --git a/haproxy.c b/haproxy.c
index aadd898..3532055 100644
--- a/haproxy.c
+++ b/haproxy.c
@@ -2996,7 +2996,7 @@
 		 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
 		 (p->options & PR_O_COOK_ANY) ? sess_cookie[(s->flags & SN_CK_MASK) >> SN_CK_SHIFT] : '-',
 		 (p->options & PR_O_COOK_ANY) ? sess_set_cookie[(s->flags & SN_SCK_MASK) >> SN_SCK_SHIFT] : '-',
-		 s->srv ? s->srv->cur_sess : 0, s->logs.queue_size,
+		 s->logs.queue_size, s->srv ? s->srv->cur_sess : 0,
 		 p->nbconn, actconn, tmpline);
     }
     else {
@@ -3013,7 +3013,7 @@
 		 (p->to_log & LW_BYTES) ? "" : "+", s->logs.bytes,
 		 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
 		 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
-		 s->srv ? s->srv->cur_sess : 0, s->logs.queue_size,
+		 s->logs.queue_size, s->srv ? s->srv->cur_sess : 0,
 		 p->nbconn, actconn);
     }