Cuetools.Converter.exe: support for --decoder-option parameter.

Implemented "Stream" option in BDLPCM Reader to make it possible to select
the right stream in m2ts file.

CUETools.Codecs.FLAKE/FlakeReader.cs

@@ -118,7 +118,9 @@ namespace CUETools.Codecs.FLAKE
 			framereader = new BitReader();
 		}
 
-		public void Close()
+        public AudioDecoderSettings Settings { get { return null; } }
+
+        public void Close()
 		{
 			_IO.Close();
 		}