hg: lambda/lambda/jdk: - PipelineHelper.collect should flatten only if a parallel pipeline.

[paul.sandoz at oracle.com]

Changeset: acfcba023020
Author:    psandoz
Date:      2013-02-20 14:57 +0100
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/acfcba023020

- PipelineHelper.collect should flatten only if a parallel pipeline.
- Add some more JavaDoc.

! src/share/classes/java/util/stream/AbstractPipeline.java
! src/share/classes/java/util/stream/PipelineHelper.java