[MEDIUM] session: initialize server-side timeouts after connect()

It was particularly embarrassing that the server timeout was assigned
to buffers during an accept() just to be potentially changed later in
case of a use_backend rule. The frontend side has nothing to do with
server timeouts.

Now we initialize them right after the connect() succeeds. Later this
should change for a unique stream-interface timeout setting only.
diff --git a/src/frontend.c b/src/frontend.c
index a51231e..cdd46ce 100644
--- a/src/frontend.c
+++ b/src/frontend.c
@@ -351,7 +351,7 @@
 	}
 
 	s->req->rto = s->fe->timeout.client;
-	s->req->wto = s->be->timeout.server;
+	s->req->wto = TICK_ETERNITY;
 
 	if (unlikely((s->rep = pool_alloc2(pool2_buffer)) == NULL))
 		goto out_fail_rep; /* no memory */
@@ -363,7 +363,7 @@
 	s->si[0].ob = s->si[1].ib = s->rep;
 	s->rep->analysers = 0;
 
-	s->rep->rto = s->be->timeout.server;
+	s->rep->rto = TICK_ETERNITY;
 	s->rep->wto = s->fe->timeout.client;
 
 	s->req->rex = TICK_ETERNITY;