git: openjdk/jdk21: 8308694: Clarify reversed() default methods' implementation requirements

[Stuart Marks]

Changeset: f6ad56bc
Author:    Stuart Marks <smarks at openjdk.org>
Date:      2023-07-12 22:59:15 +0000
URL:       https://git.openjdk.org/jdk21/commit/f6ad56bcbcfee3ee2db7dfb14f817c0a7bf18279

8308694: Clarify reversed() default methods' implementation requirements

Reviewed-by: naoto, bpb
Backport-of: f82c8184b26142da4018ae096cfa39d87a4c6540

! src/java.base/share/classes/java/util/Deque.java
! src/java.base/share/classes/java/util/List.java
! src/java.base/share/classes/java/util/SortedMap.java
! src/java.base/share/classes/java/util/SortedSet.java