Inaccessible outer class member is now an error

#KT-1174 In Progress

compiler/testData/diagnostics/tests/scopes/initializerScopeOfExtensionProperty.kt

@@ -19,7 +19,7 @@ val A.foo1 : Int get() = ii
 
 
 class C {
-    class D {}
+    inner class D {}
 }
 
 val C.foo : C.D = <!UNRESOLVED_REFERENCE!>D<!>()

compiler/testData/diagnostics/tests/scopes/kt2262.kt

@@ -9,7 +9,7 @@ abstract class Foo {
 class Bar : Foo() {
     protected val i: Int = 1
 
-    class Baz {
+    inner class Baz {
         val copy = color // INVISIBLE_MEMBER: Cannot access 'color' in 'Bar'
         val j = i
     }