Add tests for 'for...of' emit when LHS is a var

tests/cases/conformance/statements/for-ofStatements/ES5For-of1.ts

@@ -0,0 +1 @@
+for (var v of []) { }

tests/cases/conformance/statements/for-ofStatements/ES5For-of2.ts

@@ -0,0 +1,3 @@
+for (var v of []) {
+    var x = v;
+}

tests/cases/conformance/statements/for-ofStatements/ES5For-of3.ts

@@ -0,0 +1,2 @@
+for (var v of [])
+    var x = v;

tests/cases/conformance/statements/for-ofStatements/ES5For-of4.ts

@@ -0,0 +1,3 @@
+for (var v of [])
+    var x = v;
+var y = v;

tests/cases/conformance/statements/for-ofStatements/ES5For-of5.ts

@@ -0,0 +1,3 @@
+for (var _a of []) {
+    var x = _a;
+}

tests/cases/conformance/statements/for-ofStatements/ES5For-of6.ts

@@ -0,0 +1,5 @@
+for (var w of []) {
+    for (var v of []) {
+        var x = [w, v];
+    }
+}

tests/cases/conformance/statements/for-ofStatements/ES5For-of7.ts

@@ -0,0 +1,7 @@
+for (var w of []) {
+    var x = w;
+}
+
+for (var v of []) {
+    var x = [w, v];
+}