Allow resolve class declarations in class objects

Use INACCESSIBLE_OUTER_CLASS_EXPRESSION error for marking already resolved elements

 #KT-3261 Fixed

compiler/testData/codegen/box/classes/classObjectsWithParentClasses.kt

@@ -0,0 +1,12 @@
+open class Test {
+    class object {
+        fun testStatic(ic: InnerClass): NotInnerClass = NotInnerClass(ic.value)
+    }
+
+    fun test(): InnerClass = InnerClass(150)
+
+    inner open class InnerClass(val value: Int)
+    open class NotInnerClass(val value: Int)
+}
+
+fun box() = if (Test.testStatic(Test().test()).value == 150) "OK" else "FAIL"