Merge boxWithStdlib testData into box, delete BoxWithStdlib test

compiler/testData/codegen/box/reified/spreads.kt

@@ -0,0 +1,26 @@
+// WITH_RUNTIME
+
+import kotlin.test.assertEquals
+
+fun <T> foo(vararg a: T) = a.size
+
+inline fun <reified T> bar(a: Array<T>, block: () -> T): Array<T> {
+    assertEquals(4, foo(*a, block(), block()))
+
+    return arrayOf(*a, block(), block())
+}
+
+inline fun <reified T> empty() = arrayOf<T>()
+
+fun box(): String {
+
+    var i = 0
+    val a: Array<String> = bar(arrayOf("1", "2")) { i++; i.toString() }
+    assertEquals("1234", a.joinToString(""))
+
+    i = 0
+    val b: Array<Int> = bar(arrayOf(0, 1)) { i++ }
+    assertEquals("0123", b.map { it.toString() }.joinToString(""))
+
+    return "OK"
+}