added has_incoming to torrent_status per #315

docs/manual.rst

@@ -2228,6 +2228,8 @@ It contains the following fields::
 		int seed_rank;
 
 		int last_scrape;
+
+		bool has_incoming;
 	};
 
 ``progress`` is a value in the range [0, 1], that represents the progress of the
@@ -2410,6 +2412,9 @@ to seed ratio from the tracker scrape. For more information, see queuing_.
 ``last_scrape`` is the number of seconds since this torrent acquired scrape data.
 If it has never done that, this value is -1.
 
+``has_incoming`` is true if there has ever been an incoming connection attempt
+to this torrent.'
+
 
 peer_info
 =========