rem: int add_lump_rpl(struct sip_msg * msg, struct lump_rpl* lump)
add: void add_lump_rpl(struct sip_msg * msg, struct lump_rpl* lump)
context: int add_lump_rpl(struct sip_msg * msg, struct lump_rpl* lump){	struct lump_rpl *foo;	if (!msg->reply_lump)	{		msg->reply_lump = lump;	}else{		for(foo=msg->reply_lump;foo->next;foo=foo->next);		foo->next = lump;	}}