[Tests] Migrate backend-independent tests from native to compiler/testData.

^KT-65979

compiler/testData/codegen/box/inline/inline1.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+// WITH_STDLIB
+
+import kotlin.test.*
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun foo(s4: String, s5: String): String {
+    return s4 + s5
+}
+
+fun bar(s1: String, s2: String, s3: String): String {
+    return s1 + foo(s2, s3)
+}
+
+fun box(): String {
+    assertEquals("Hello world", bar("Hello ", "wor", "ld"))
+    return "OK"
+}
+
+