update unbound from upstream

external/unbound/iterator/iterator.h

@@ -52,6 +52,8 @@ struct iter_donotq;
 struct iter_prep_list;
 struct iter_priv;
 
+/** max number of targets spawned for a query and its subqueries */
+#define MAX_TARGET_COUNT	32
 /** max number of query restarts. Determines max number of CNAME chain. */
 #define MAX_RESTART_COUNT       8
 /** max number of referrals. Makes sure resolver does not run away */
@@ -233,6 +235,7 @@ struct iter_qstate {
 	/** state for capsfail: stored query for comparisons. Can be NULL if
 	 * no response had been seen prior to starting the fallback. */
 	struct reply_info* caps_reply;
+	struct dns_msg* caps_response;
 
 	/** Current delegation message - returned for non-RD queries */
 	struct dns_msg* deleg_msg;
@@ -251,6 +254,10 @@ struct iter_qstate {
 
 	/** number of queries fired off */
 	int sent_count;
+	
+	/** number of target queries spawned in [1], for this query and its
+	 * subqueries, the malloced-array is shared, [0] refcount. */
+	int* target_count;
 
 	/**
 	 * The query must store NS records from referrals as parentside RRs