Add tests for newly discovered issue with ECMA5 and top level vars in root scope.

js/js.translator/testFiles/expression/misc/cases/namespaceLevelVarInPackage.kt

@@ -0,0 +1,14 @@
+package foo
+
+var c = 2
+
+fun incC(i: Int) {
+    c += c + i
+}
+
+fun box() : Any? {
+    for (i in 0..2) {
+        incC(i)
+    }
+    return if (c == 20) "OK" else c
+}

js/js.translator/testFiles/expression/misc/cases/namespaceLevelVarInRoot.kt

@@ -0,0 +1,12 @@
+var c = 2
+
+fun incC(i: Int) {
+    c += c + i
+}
+
+fun box() : Any? {
+    for (i in 0..2) {
+        incC(i)
+    }
+    return if (c == 20) "OK" else c
+}