Added link test, checking correct object field layout.

backend.native/tests/codegen/delegatedProperty/delegatedOverride_main.kt

@@ -0,0 +1,17 @@
+import a.*
+
+open class C: B() {
+    override val x: Int = 156
+
+    fun foo() {
+        println(x)
+
+        println(super<B>.x)
+        bar()
+    }
+}
+
+fun main(args: Array<String>) {
+    val c = C()
+    c.foo()
+}