Prohibit local objects and enum classes

#KT-5402 Fixed
  #KT-4838 Fixed

Resolve type of object inside local object as special, not supertype('Any').
Changed visibility of constructor of anonymous object to 'internal' to be able to resolve the following:
fun box(): String {
    var foo = object {
        val bar = object {
            val baz = "ok"
        }
    }
    return foo.bar.baz
}
The containing declaration of property initializers is constructor, so 'baz' was invisible inside private constructor.

compiler/testData/codegen/box/localClasses/enum.kt

@@ -1,8 +0,0 @@
-fun box(): String {
-    enum class K {
-        O
-        K
-    }
-
-    return K.O.toString() + K.K.toString()
-}

compiler/testData/codegen/box/localClasses/localClassInInitializer.kt

@@ -6,11 +6,11 @@ class A {
             open fun s() : String = "O"
         }
 
-        object O: B() {
+        val o = object : B() {
             override fun s(): String = "K"
         }
 
-        a = B().s() + O.s()
+        a = B().s() + o.s()
     }
 }
 

compiler/testData/codegen/box/localClasses/localClassInParameterInitializer.kt

@@ -4,11 +4,11 @@ class A(
                 open fun s() : String = "O"
             }
 
-            object O: B() {
+            val o = object : B() {
                 override fun s(): String = "K"
             }
 
-            B().s() + O.s()
+            B().s() + o.s()
         }()
 )
 

compiler/testData/codegen/box/localClasses/object.kt

@@ -1,7 +1,7 @@
 fun box(): String {
-    object K {
+    val k = object {
         val ok = "OK"
     }
 
-    return K.ok
+    return k.ok
 }