Added static methods, nested classes and companion object from superclasses.

compiler/testData/diagnostics/tests/scopes/inheritance/nestedCompanionClass.kt

@@ -0,0 +1,37 @@
+open class A {
+    companion object {
+        class B
+    }
+}
+
+class C: A() {
+    val b: B = null!!
+
+    init {
+        B()
+    }
+
+    object O {
+        val b: B = null!!
+
+        init {
+            B()
+        }
+    }
+
+    class K {
+        val b: B = null!!
+
+        init {
+            B()
+        }
+    }
+
+    inner class I {
+        val b: B = null!!
+
+        init {
+            B()
+        }
+    }
+}