JS stdlib: added missed tests for Set and fixed HashSet implementations. Implemented Set::iterator, AbstractCollection::removeAll, AbstractCollection::retainAll, AbstractCollection::containsAll.

#KT-4390 fixed

js/js.tests/test/org/jetbrains/k2js/test/semantics/StdLibMapJsTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2014 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,7 +20,7 @@ import junit.framework.Test;
 
 //NOTE: well, it has tests
 @SuppressWarnings("JUnitTestCaseWithNoTests")
-public final class StdLibMapTest extends JsUnitTestBase {
+public final class StdLibMapJsTest extends JsUnitTestBase {
     public static Test suite() throws Exception {
         return createTestSuiteForFile("libraries/stdlib/test/js/MapJsTest.kt");
     }

js/js.tests/test/org/jetbrains/k2js/test/semantics/StdLibSetJsTest.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2014 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.k2js.test.semantics;
+
+import junit.framework.Test;
+
+@SuppressWarnings("JUnitTestCaseWithNoTests")
+public final class StdLibSetJsTest extends JsUnitTestBase {
+    public static Test suite() throws Exception {
+        return createTestSuiteForFile("libraries/stdlib/test/js/SetJsTest.kt");
+    }
+}
+