implemented reauthentication using the new reauth=yes|no parameter

src/stroke/stroke.c

@@ -107,6 +107,7 @@ static int add_connection(char *name,
 	msg.add_conn.name = push_string(&msg, name);
 	msg.add_conn.ikev2 = 1;
 	
+	msg.add_conn.rekey.reauth = 0;
 	msg.add_conn.rekey.ipsec_lifetime = 0;
 	msg.add_conn.rekey.ike_lifetime = 0;
 	msg.add_conn.rekey.margin = 0;

src/stroke/stroke.h

@@ -142,6 +142,7 @@ struct stroke_msg_t {
 				char *esp;
 			} algorithms;
 			struct {
+				int reauth;
 				time_t ipsec_lifetime;
 				time_t ike_lifetime;
 				time_t margin;