android: add LogListener

A Java object to send logs on the android side.

android/src/Bridge.java

@@ -25,6 +25,12 @@ import android.content.Context;
  * Bridge to native code.
  */
 public class Bridge {
-	public static native void run(Context context);
+
+	/* used by jni */
+	public interface LogListener {
+		public void onLog(int priority, String msg);
+	}
+
+	public static native void run(Context context, LogListener logListener);
 	public static native void shutdown();
 }

android/src/Main.java

@@ -69,7 +69,7 @@ public class Main extends Activity implements Runnable {
 	}
 
 	@Override public void run() {
-		Bridge.run(this);
+		Bridge.run(this, null);
 		quitHandler.sendMessage(quitHandler.obtainMessage());
 	}
 }