Migrate Java code to separate QL repo.

java/ql/src/Language Abuse/WrappedIteratorBad2.java

@@ -0,0 +1,18 @@
+class MySequence implements Iterable<MyElem> {
+  // ... some reference to data
+  final Iterator<MyElem> it = data.iterator();
+  // Wrong: iteration state outside returned iterator
+  public Iterator<MyElem> iterator() {
+    return new Iterator<MyElem>() {
+      public boolean hasNext() {
+        return it.hasNext();
+      }
+      public MyElem next() {
+        return transformElem(it.next());
+      }
+      public void remove() {
+        // ...
+      }
+    };
+  }
+}