Write outer class info for closures

compiler/testData/codegen/boxWithStdlib/reflection/lambda/lambdaInConstructor.kt

@@ -0,0 +1,17 @@
+class C {
+    val l: Any = {}
+}
+
+fun box(): String {
+    val javaClass = C().l.javaClass
+    val enclosingConstructor = javaClass.getEnclosingConstructor()
+    if (enclosingConstructor?.getDeclaringClass()?.getName() != "C") return "ctor: $enclosingConstructor"
+
+    val enclosingClass = javaClass.getEnclosingClass()
+    if (enclosingClass?.getName() != "C") return "enclosing class: $enclosingClass"
+
+    val declaringClass = javaClass.getDeclaringClass()
+    if (declaringClass != null) return "anonymous function has a declaring class: $declaringClass"
+
+    return "OK"
+}