Replay works. Nicer print of steps taken. Two example replays, forward one

query and forward but a timeout happens.
Both run in 0.1 sec; even the timeout, since it is triggered from the input
file not by waiting.


git-svn-id: file:///svn/unbound/trunk@91 be551aaa-1e26-0410-a405-d3ace91eadb9

testcode/replay.h

@@ -158,7 +158,9 @@ struct replay_moment {
 	struct entry* match;
 
 	/** what pending query should timeout or is answered. or 
-	 * NULL for last sent query. */
+	 * NULL for last sent query. 
+	 * Unused at this time.
+	 */
 	ldns_rr* qname;
 };