Move JVM8 box test to common

compiler/testData/codegen/box/jvm8/inlineFromAnotherFile.kt

@@ -0,0 +1,20 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+//WITH_RUNTIME
+
+// FILE: 1.kt
+package test
+
+public inline fun <T, R> Iterable<T>.fold2(initial: R, operation: (R, T) -> R): R {
+    var accumulator = initial
+    for (element in this) accumulator = operation(accumulator, element)
+    return accumulator
+}
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    val list = listOf("O", "K")
+    return list.fold2("") {a, b -> a +b}
+}