Inaccessible outer class member is now an error

#KT-1174 In Progress

compiler/testData/codegen/classes/inheritedInnerClass.jet

@@ -1,8 +1,8 @@
 class Outer() {
-  open class InnerBase() {
+  open inner class InnerBase() {
   }
 
-  class InnerDerived(): InnerBase() {
+  inner class InnerDerived(): InnerBase() {
   }
 
   public val foo: InnerBase? = InnerDerived()

compiler/testData/codegen/classes/initializerBlockDImpl.jet

@@ -4,7 +4,7 @@ import java.io.*
 class World() {
   public val items: ArrayList<Item> = ArrayList<Item>()
 
-  class Item() {
+  inner class Item() {
     {
       items.add(this)
     }

compiler/testData/codegen/classes/innerClass.jet

@@ -1,5 +1,5 @@
 class Outer(val foo: StringBuilder) {
-  class Inner() {
+  inner class Inner() {
     fun len() : Int {
       return foo.length()
     }

compiler/testData/codegen/classes/privateOuterFunctions.kt

@@ -20,7 +20,7 @@ class C {
         return "OK"
     }
 
-    private class Inner() {
+    private inner class Inner() {
         fun innerFun() {
             "".ext()
             f()

compiler/testData/codegen/classes/privateOuterProperty.kt

@@ -17,7 +17,7 @@ class C{
         return v
     }
 
-    private class Inner() {
+    private inner class Inner() {
         fun innerFun() {
             v = v + 1
         }

compiler/testData/codegen/classes/propertyInInitializer.jet

@@ -1,10 +1,10 @@
 class Outer() {
   val s = "xyzzy"
 
-  open class InnerBase(public val name: String) {
+  open inner class InnerBase(public val name: String) {
   }
 
-  class InnerDerived(): InnerBase(s) {
+  inner class InnerDerived(): InnerBase(s) {
   }
 
   val x = InnerDerived()