Decouples DecoderState from the Decoder and makes DecoderState inherit

from Module so that Decoder can function independent of DecoderSTate and
DecoderState can more cleanly interface with other modules. 

Resolves issue with LTR-type decoders where the AudioModule was
filtering demodulated audio buffers before the decoder received the
audio - demodulated audio buffers are now copied before creating
AudioPackets.

src/module/decode/passport/PassportDecoder.java

@@ -50,8 +50,6 @@ public class PassportDecoder extends Decoder
 	public PassportDecoder( DecodeConfiguration config, 
 							AliasList aliasList )
 	{
-		super( new PassportDecoderState( aliasList ) );
-
 		mPassportFSKDecoder = new LTRFSKDecoder();
 
 		mPassportMessageFramer = 
@@ -101,4 +99,25 @@ public class PassportDecoder extends Decoder
     {
 		mPassportFSKDecoder.unregisterTap( tap );
     }
+
+	@Override
+	public void reset()
+	{
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void start()
+	{
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void stop()
+	{
+		// TODO Auto-generated method stub
+		
+	}
 }