[Native][tests] Move golden data outside of Gradle build file

kotlin-native/backend.native/tests/serialization/serialized_doWhile/library.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+
+inline fun foo() {
+    do {
+        var x: Int = 999
+        println(x)
+    } while (x != 999)
+}

kotlin-native/backend.native/tests/serialization/serialized_doWhile/main.kt

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+
+fun main(args: Array<String>) {
+    foo()
+}

kotlin-native/backend.native/tests/serialization/serialized_doWhile/main.out

@@ -0,0 +1 @@
+999