Merge boxWithStdlib testData into box, delete BoxWithStdlib test

compiler/testData/codegen/box/jvmStatic/kt9897_static.kt

@@ -0,0 +1,43 @@
+// WITH_RUNTIME
+
+object Test {
+    var z = "0"
+    var l = 0L
+
+    fun changeObject(): String {
+        "1".someProperty += 1
+        return z
+    }
+
+    fun changeLong(): Long {
+        2L.someProperty -= 1
+        return l
+    }
+
+    @JvmStatic var String.someProperty: Int
+        get() {
+            return this.length
+        }
+        set(left) {
+            z += this + left
+        }
+
+    @JvmStatic var Long.someProperty: Long
+        get() {
+            return l
+        }
+        set(left) {
+            l += this + left
+        }
+
+}
+
+fun box(): String {
+    val changeObject = Test.changeObject()
+    if (changeObject != "012") return "fail 1: $changeObject"
+
+    val changeLong = Test.changeLong()
+    if (changeLong != 1L) return "fail 1: $changeLong"
+
+    return "OK"
+}