BC native tests port to Konan's TestRunner

backend.native/tests/codegen/object/fields.kt

@@ -1,3 +1,7 @@
+package codegen.`object`.fields
+
+import kotlin.test.*
+
 private var globalValue = 1
 var global:Int
     get() = globalValue
@@ -9,7 +13,7 @@ fun globalTest(i:Int):Int {
 }
 
 
-fun main(args:Array<String>) {
+@Test fun runTest() {
     if (global != 1)          throw Error()
     if (globalTest(41) != 42) throw Error()
     if (global != 42)         throw Error()