git: openjdk/jdk: 8254234: Add test library stream object builder

[Chris Hegarty]

Changeset: aad3cf4d
Author:    Chris Hegarty <chegar at openjdk.org>
Date:      2020-10-12 13:06:10 +0000
URL:       https://git.openjdk.java.net/jdk/commit/aad3cf4d

8254234: Add test library stream object builder

Reviewed-by: rriggs

! test/jdk/java/io/Serializable/records/DifferentStreamFieldsTest.java
+ test/lib/jdk/test/lib/serial/SerialObjectBuilder.java