Debugger function moved to separated class, other small fixes

libsrc/ffdec_lib/src/com/jpexs/helpers/Helper.java

@@ -325,6 +325,14 @@ public class Helper {
         return ret;
     }
 
+    public static String byteArrayToHex(byte[] a) {
+        StringBuilder sb = new StringBuilder(a.length * 2);
+        for (byte b : a) {
+            sb.append(String.format("%02x", b & 0xff));
+        }
+        return sb.toString();
+    }
+
     public static String bytesToHexString(byte[] bytes) {
         return bytesToHexString(bytes, 0);
     }