Added tests on labels

#KT-1703 Fixed
 #KT-361 Fixed
 #KT-3920 Fixed
 #KT-3988 Fixed
 #KT-4247 Fixed
 #KT-4586 Fixed
 #KT-4603 Fixed
 #KT-591 Fixed

compiler/testData/diagnostics/tests/labels/kt3988.kt

@@ -0,0 +1,21 @@
+//KT-3988 This@label for outer function not resolved
+
+class Comment() {
+    var article = ""
+
+}
+class Comment2() {
+    var article2 = ""
+}
+
+fun new(body: Comment.() -> Unit) = body
+
+fun new2(body: Comment2.() -> Unit) = body
+
+fun main(args: Array<String>) {
+    new {
+        new2 {
+            this@new //UNRESOLVED REFERENCE
+        }
+    }
+}