Minamp 1.10: read the next track ahead; log to logcat too

On weak Wi-Fi shared with Bluetooth audio, Android 2.x's player (a few seconds
of stream buffer) ran dry and went silent for 6-7 s at a time; the speaker then
sometimes hung up. While a track plays, the next one is fetched whole (Wi-Fi
only) and played from the file. DiagLog lines also go to logcat (tag Minamp).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/com/minamp/net/DiagLog.java

@@ -19,6 +19,7 @@ public final class DiagLog {
     private DiagLog() {}
 
     public static void log(String msg) {
+        android.util.Log.i("Minamp", msg);   // also in logcat: readable over USB after the fact
         String line;
         synchronized (fmt) { line = fmt.format(new Date()) + " " + msg; }
         synchronized (lines) {