Move blackBoxFile() testData to box/ directory

Delete all test methods (and empty test classes), since they'll be
auto-generated

compiler/testData/codegen/box/objects/kt560.kt

@@ -0,0 +1,28 @@
+package while_bug_1
+
+import java.io.*
+
+open class AllEvenNum() {
+
+    class object {
+        open public fun main(args : Array<String?>?) : Unit {
+            var i : Int = 1
+            while ((i <= 100)) {
+                    {
+                        if (((i % 2) == 0))
+                        {
+                            System.out?.print((i.toString() + ","))
+                        }
+
+                    }
+                (i = i + 1)
+            }
+        }
+
+    }
+}
+
+fun box() : String {
+    AllEvenNum.main(arrayOfNulls<String>(0))
+    return "OK"
+}