[MINOR] proxy: add a list to hold future layer 4 rules

This list will be evaluated right after the accept() call.

include/types/proxy.h

@@ -182,6 +182,7 @@ struct proxy {
 	struct {                                /* TCP request processing */
 		unsigned int inspect_delay;     /* inspection delay */
 		struct list inspect_rules;      /* inspection rules */
+		struct list l4_rules;           /* layer4 rules */
 	} tcp_req;
 	int acl_requires;                       /* Elements required to satisfy all ACLs (ACL_USE_*) */
 	struct server *srv, defsrv;		/* known servers; default server configuration */

src/cfgparse.c

@@ -908,6 +908,7 @@ static void init_new_proxy(struct proxy *p)
 	LIST_INIT(&p->sticking_rules);
 	LIST_INIT(&p->storersp_rules);
 	LIST_INIT(&p->tcp_req.inspect_rules);
+	LIST_INIT(&p->tcp_req.l4_rules);
 	LIST_INIT(&p->req_add);
 	LIST_INIT(&p->rsp_add);