Minor, move tests under common directory

compiler/testData/codegen/boxWithStdlib/reflection/enclosing/classInLambda.kt

@@ -0,0 +1,18 @@
+fun box(): String {
+
+    val classInLambda = {
+        class Z {}
+        Z()
+    }()
+
+    val enclosingMethod = classInLambda.javaClass.getEnclosingMethod()
+    if (enclosingMethod?.getName() != "invoke") return "method: $enclosingMethod"
+
+    val enclosingClass = classInLambda.javaClass.getEnclosingClass()!!.getName()
+    if (!enclosingClass.startsWith("_DefaultPackage\$") || !enclosingClass.endsWith("\$box\$classInLambda\$1")) return "enclosing class: $enclosingClass"
+
+    val declaringClass = classInLambda.javaClass.getDeclaringClass()
+    if (declaringClass != null) return "class has a declaring class"
+
+    return "OK"
+}