polymorphed quest leader

Duuuh.  Of course adding objects already changed the editlevel.

Anyway, here's the fix I was working on.  It only matters in a very obscure
situation.  (Also, the quest leader still speaks no matter what he's
polymorphed into.)

include/extern.h

@@ -1553,7 +1553,6 @@ E void NDECL(unload_qtlist);
 E short FDECL(quest_info, (int));
 E const char *NDECL(ldrname);
 E boolean FDECL(is_quest_artifact, (struct obj*));
-E boolean NDECL(leaderless);
 E void FDECL(com_pager, (int));
 E void FDECL(qt_pager, (int));
 E struct permonst *NDECL(qt_montype);

include/quest.h

@@ -25,6 +25,11 @@ struct q_score {			/* Quest "scorecard" */
 	Bitfield(touched_artifact,1);	/* for a special message */
 	Bitfield(offered_artifact,1);	/* offered to leader */
 	Bitfield(got_thanks,1);		/* final message from leader */
+
+	/* keep track of leader presence/absence even if leader is
+	   polymorphed, raised from dead, etc */
+	Bitfield(leader_is_dead,1);
+	unsigned leader_m_id;
 };
 
 #define MAX_QUEST_TRIES  7	/* exceed this and you "fail" */