hg: jdk9/sandbox/jdk: 8176303: Flow.Subscription.request(0) should be treated as an error

[chris.hegarty at oracle.com]

Changeset: f80fadfa33c3
Author:    dl
Date:      2017-03-10 08:59 -0800
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/f80fadfa33c3

8176303: Flow.Subscription.request(0) should be treated as an error
Reviewed-by: martin, chegar

! src/java.base/share/classes/java/util/concurrent/Flow.java
! src/java.base/share/classes/java/util/concurrent/SubmissionPublisher.java
! test/java/util/concurrent/tck/SubmissionPublisherTest.java