Move some tests from boxWithStdlib/ to box/

Move those tests which do not require neither stdlib nor reflect

compiler/testData/codegen/box/dataClasses/hashCode/array.kt

@@ -0,0 +1,6 @@
+data class A(val a: IntArray, var b: Array<String>)
+
+fun box() : String {
+   if( A(intArrayOf(1,2,3),arrayOf("239")).hashCode() != 31*java.util.Arrays.hashCode(intArrayOf(0,1,2)) + "239".hashCode()) "fail"
+   return "OK"
+}