Forbid usage of outer's generic parameter in nested class

#KT-1174 In Progress

compiler/testData/codegen/traits/stdlib.jet

@@ -19,10 +19,6 @@ class MyIterator<T>(val array : ReadOnlyArray<T>) : javaUtilIterator<T> {
 trait ReadOnlyArray<out T> : ISized, Iterable<T> {
   fun get(index : Int) : T
 
-  class Default {
-    fun check(v: Any) =  v is T
-  }
-
   override fun iterator() : Iterator<T> = MyIterator<T>(this)
 }
 

compiler/testData/codegen/typeInfo/inner.jet

@@ -1,9 +1,9 @@
 class Box<T>() {
-    open class Inner () {
+    open inner class Inner () {
         fun isT(s : Any) = if(s is T) "OK" else "fail"
     }
 
-    class Inner2() : Inner() {
+    inner class Inner2() : Inner() {
     }
 
     fun inner() = Inner2()

compiler/testData/diagnostics/tests/PrimaryConstructors.kt

@@ -19,7 +19,7 @@ class MyIterable<T> : Iterable<T>
 {
     override fun iterator(): Iterator<T>  = MyIterator()
 
-    class MyIterator : Iterator<T>
+    inner class MyIterator : Iterator<T>
     {
         override fun hasNext(): Boolean = false
         override fun next(): T {

compiler/testData/diagnostics/tests/inner/outerGenericParam.kt

@@ -0,0 +1,13 @@
+class Outer<T> {
+    class Nested {
+        fun foo(t: <!INACCESSIBLE_OUTER_CLASS_EXPRESSION!>T<!>) = t
+    }
+    
+    class Nested2<T> {
+        fun foo(t: T) = t
+    }
+    
+    inner class Inner {
+        fun foo(t: T) = t
+    }
+}