Separated FFDec core library and the rest (GUI).

FFDec Library is now LGPLv3, others stay GPLv3.
Version changed to 3.0.0 for FFDec, 1.0.0 for FFDec Library.

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

@@ -0,0 +1,58 @@
+/*
+ *  Copyright (C) 2010-2014 JPEXS, All rights reserved.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3.0 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.
+ */
+package com.jpexs.helpers;
+
+import java.util.Date;
+
+/**
+ *
+ * @author JPEXS
+ */
+public class Stopwatch {
+
+    private long startTime, elapsedTime;
+    private boolean running;
+    public Date startDate, endDate;
+
+    public static Stopwatch startNew() {
+        Stopwatch sw = new Stopwatch();
+        sw.start();
+        return sw;
+    }
+
+    public void start() {
+        running = true;
+        startDate = new Date();
+        startTime = System.nanoTime();
+    }
+
+    public void stop() {
+        elapsedTime = System.nanoTime() - startTime;
+        endDate = new Date();
+        running = false;
+    }
+
+    public long getElapsedNanoseconds() {
+        if (running) {
+            return System.nanoTime() - startTime;
+        }
+        return elapsedTime;
+    }
+
+    public long getElapsedMilliseconds() {
+        return getElapsedNanoseconds() / 1000000;
+    }