RFR 8037106: Optimize Arrays.asList(...).forEach

[Paul Sandoz]

Hi,

This patch overrides some default methods with more optimal ones for the Arrays.asList implementation:

  http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8037106-arrays.asList.forEach/webrev/

It required some surgical work on tests to shove in the Arrays.asList test case, since it is a factory method and does not support structural modification.

There are of course other optimizations that could apply to Arrays.asList, namely that of sub-list, but i have left that as another future possible exercise (plus further work could be done to Abstract/List, including providing a Spliterator for List & RandomAccess).

Paul.