Migrate boxWithJava tests to multi-file framework

compiler/testData/codegen/boxWithJava/statics/protectedStaticAndInline.kt

@@ -0,0 +1,26 @@
+// FILE: First.java
+
+public abstract class First {
+    protected static String TEST = "O";
+
+    protected static String test() {
+        return "K";
+    }
+}
+
+// FILE: Kotlin.kt
+
+package anotherPackage
+
+import First
+
+class Test : First() {
+
+    inline fun doTest(): String {
+        return TEST + test()
+    }
+}
+
+fun box(): String {
+    return Test().doTest()
+}