added a native array() function for the JS generation; also refactored the code generated collection APIs so that most of them can be used with JavaScript and included more array based APIs into the JS generation

libraries/stdlib/test/js/JsArrayTest.kt

@@ -0,0 +1,22 @@
+package testPackage
+
+import org.junit.Test as test
+import kotlin.test.*
+
+class JsArrayTest {
+
+    test fun arrays() {
+        val a1 = array<String>()
+        val a2 = array("foo")
+        val a3 = array("foo", "bar")
+
+        assertEquals(0, a1.size)
+        assertEquals(1, a2.size)
+        assertEquals(2, a3.size)
+
+        assertEquals("[]", a1.toList().toString())
+        assertEquals("[foo]", a2.toList().toString())
+        assertEquals("[foo, bar]", a3.toList().toString())
+
+    }
+}