Migrate boxInline tests to new multi-file framework

compiler/testData/codegen/boxInline/smap/inlineOnly/reified.kt

@@ -0,0 +1,30 @@
+// FILE: 1.kt
+
+package test
+
+inline fun <reified T> className() =  T::class.simpleName
+
+// FILE: 2.kt
+
+import test.*
+
+fun box(): String {
+    val z = className<String>()
+    if (z != "String") return "fail: $z"
+
+    return "OK"
+}
+
+//SMAP
+//reified.1.kt
+//Kotlin
+//*S Kotlin
+//*F
+//+ 1 reified.1.kt
+//Reified_1Kt
+//+ 2 reified.2.kt
+//test/Reified_2Kt
+//*L
+//1#1,22:1
+//3#2:23
+//*E