hg: lambda/lambda/jdk: - implement IntStream.average (arithemtic mean).

[paul.sandoz at oracle.com]

Changeset: 932b4939d7c8
Author:    psandoz
Date:      2012-11-20 16:34 +0100
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/932b4939d7c8

- implement IntStream.average (arithemtic mean).

+ src/share/classes/java/util/stream/primitive/IntAverageOp.java
! src/share/classes/java/util/stream/primitive/IntPipeline.java
! src/share/classes/java/util/stream/primitive/IntStream.java
+ test-ng/tests/org/openjdk/tests/java/util/stream/primitive/IntAverageOpTest.java