hg: lambda/lambda/jdk: Fix: value.length() == 0 does not necessary represent StringJoiner is empty

[mike.duigou at oracle.com]

Changeset: 16e449dfdcda
Author:    henryjen
Date:      2012-12-14 17:36 -0800
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/16e449dfdcda

Fix: value.length() == 0 does not necessary represent StringJoiner is empty

! src/share/classes/java/util/StringJoiner.java
! test-ng/tests/org/openjdk/tests/java/util/StringJoinerTest.java