hg: jdk/sandbox: 8202385: Annotation to mark serial-related fields and methods

[chris.hegarty at oracle.com]

Changeset: 0abdc5a425dd
Author:    darcy
Date:      2019-08-19 18:12 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/0abdc5a425dd

8202385: Annotation to mark serial-related fields and methods
Reviewed-by: rriggs, chegar, alanb

+ src/java.base/share/classes/java/io/Serial.java