hg: jdk8/tl/jdk: 8017231: Add StringJoiner.merge

[alan.bateman at oracle.com]

Changeset: aa9fefb5d9c4
Author:    alanb
Date:      2013-07-04 20:00 +0100
URL:       http://hg.openjdk.java.net/jdk8/tl/jdk/rev/aa9fefb5d9c4

8017231: Add StringJoiner.merge
Reviewed-by: psandoz, alanb
Contributed-by: brian.goetz at oracle.com, henry.jen at oracle.com

! src/share/classes/java/util/StringJoiner.java
+ test/java/util/StringJoiner/MergeTest.java
! test/java/util/StringJoiner/StringJoinerTest.java