[MINOR] acl: add the "wait_end" acl verb

The new "wait_end" acl delays evaluation of the rule (and the next ones)
to the end of the analysis period. This is intented to be used with TCP
content analysis. A rule referencing such an ACL will not match until
the delay is over. An equivalent default ACL "WAIT_END" has been created.
diff --git a/tests/test-inspect-smtp.cfg b/tests/test-inspect-smtp.cfg
index 1c0d46d..5cfc864 100644
--- a/tests/test-inspect-smtp.cfg
+++ b/tests/test-inspect-smtp.cfg
@@ -3,7 +3,7 @@
 #   - if the address is in the white list, then accept it and forward the
 #     connection to the server (local port 25)
 #   - if the address is in the black list, then immediately drop it
-#   - otherwise, wait up to 3 seconds. If the client talks during this time,
+#   - otherwise, wait up to 35 seconds. If the client talks during this time,
 #     drop the connection.
 #   - then accept the connection if it passes all the tests.
 #
@@ -17,19 +17,28 @@
 
 	mode tcp
 	bind :8025
-	timeout  client 6s
-	timeout  server 6s
-	timeout connect 6s
+	timeout client 60s
+	timeout server 60s
+	timeout queue  60s
+	timeout connect 5s
 
-	tcp-request inspect-delay 4s
+	tcp-request inspect-delay 35s
 
 	acl white_list src 127.0.0.2
-	acl black_list src 127.0.0.3
-	acl talkative  req_len gt 0
+	acl black_fast src 127.0.0.3  # those ones are immediately rejected
+	acl black_slow src 127.0.0.4  # those ones are rejected after a delay
 
 	tcp-request content accept if white_list
-	tcp-request content reject if black_list
-	tcp-request content reject if talkative
+	tcp-request content reject if black_fast
+	tcp-request content reject if black_slow WAIT_END
+	tcp-request content reject if REQ_CONTENT
+	# note that it is possible to wait for the end of the analysis period
+	# before rejecting undesired contents
+	# tcp-request content reject if REQ_CONTENT WAIT_END
+
+	# on Linux+transparent proxy patch, it's useful to reuse the client'IP
+	# source 0.0.0.0 usesrc clientip
 
 	balance roundrobin
 	server mail 127.0.0.1:25
+