hg: lambda/lambda/jdk: Improve slice spliterator tests.

[paul.sandoz at oracle.com]

Changeset: 298c84d21a3e
Author:    psandoz
Date:      2013-06-13 15:43 +0200
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/298c84d21a3e

Improve slice spliterator tests.
Modify spliterator helper tests to support a content asserter
such an the unordered slice spliterator can check that the
slice spliterator content is a sub-set of the source.

! src/share/classes/java/util/stream/StreamSpliterators.java
! test/java/util/stream/bootlib/java/util/stream/SpliteratorTestHelper.java
! test/java/util/stream/boottest/java/util/stream/SliceSpliteratorTest.java