HackRF - final check-in. Changed all tuners to use the low-level API of the usb4java library to resolve limitation in high-level API that constrains maximum sample rate to ~2.0 MHz. Added console logging to logback.

src/source/mixer/MixerManager.java

@@ -197,6 +197,11 @@ public class MixerManager
         mLog.info( sb.toString() );
 	}
 	
+	public HashMap<String,MixerTunerDataLine> getMixerTuners()
+	{
+		return mMixerTuners;
+	}
+	
 	private TargetDataLine getTargetDataLine( Mixer.Info mixerInfo, AudioFormat format )
 	{
 		TargetDataLine retVal = null;