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/am/AMDecoder.java

@@ -21,18 +21,34 @@ package module.decode.am;
 import module.decode.DecoderType;
 import module.decode.PrimaryDecoder;
 import module.decode.config.DecodeConfiguration;
-import module.decode.state.AlwaysUnsquelchedDecoderState;
 
 public class AMDecoder extends PrimaryDecoder
 {
 	public AMDecoder( DecodeConfiguration config )
 	{
-		super( config, new AlwaysUnsquelchedDecoderState( "AM" ) );
+		super( config );
+		
+		//TODO: wire in the am decoder pieces
 	}
 
 	@Override
     public DecoderType getDecoderType()
     {
-	    return DecoderType.NBFM;
+	    return DecoderType.AM;
     }
+
+	@Override
+	public void reset()
+	{
+	}
+
+	@Override
+	public void start()
+	{
+	}
+
+	@Override
+	public void stop()
+	{
+	}
 }

src/module/decode/am/AMDecoderPanel.java

@@ -21,6 +21,7 @@ import javax.swing.JLabel;
 
 import module.decode.state.ChangedAttribute;
 import module.decode.state.DecoderPanel;
+import module.decode.state.DecoderState;
 import settings.ColorSetting;
 import settings.Setting;
 import settings.SettingsManager;
@@ -31,9 +32,9 @@ public class AMDecoderPanel extends DecoderPanel
 
     private JLabel mProtocol = new JLabel( "AM" );
 	
-	public AMDecoderPanel( SettingsManager settingsManager, AMDecoder decoder )
+	public AMDecoderPanel( SettingsManager settingsManager, DecoderState decoderState )
 	{
-		super( settingsManager, decoder );
+		super( settingsManager, decoderState );
 		
 		init();
 	}