hg: jdk/sandbox: 8191216: SimpleTimeZone.clone() has a data race on cache fields

[chris.hegarty at oracle.com]

Changeset: 8067e9cba973
Author:    plevart
Date:      2017-12-12 00:30 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/8067e9cba973

8191216: SimpleTimeZone.clone() has a data race on cache fields
Reviewed-by: alanb, naoto

! src/java.base/share/classes/java/util/SimpleTimeZone.java
+ test/jdk/java/util/TimeZone/SimpleTimeZoneCloneRaceTest.java