Tweaks to investigate Windows infinite loop and/or spurious wakeup.

src/main/java/com/zaxxer/hikari/util/ConcurrentBag.java

@@ -156,8 +156,8 @@ public class ConcurrentBag<T extends IConcurrentBagEntry> implements AutoCloseab
             addItemFuture = listener.addBagItem();
          }
 
-         timeout = originTimeout - (System.nanoTime() - startScan);
+         timeout = originTimeout - Math.abs(System.nanoTime() - startScan);
-      } while (timeout > 1000L && synchronizer.waitUntilSequenceExceeded(startSeq, timeout));
+      } while (timeout > 100_00L && synchronizer.waitUntilSequenceExceeded(startSeq, timeout));
 
       return null;
    }

src/main/java/com/zaxxer/hikari/util/Sequence.java

@@ -50,7 +50,7 @@ public interface Sequence
       public static Sequence create()
       {
          try {
-            if (Sequence.class.getClassLoader().loadClass("java.util.concurrent.atomic.LongAdder") != null) {
+            if (Sequence.class.getClassLoader().loadClass("java.util.concurrent.atomic.LongAdder") != null && !Boolean.getBoolean("com.zaxxer.hikari.useAtomicLongSequence")) {
                return new Java8Sequence();
             }
          }