RFR 8141409 Arrays.equals accepting a Comparator

[Mike Duigou]

> Date: Wed, 4 Nov 2015 15:32:25 +0100
> From: Paul Sandoz <paul.sandoz at oracle.com>
> To: core-libs-dev <core-libs-dev at openjdk.java.net>
> Subject: RFR 8141409 Arrays.equals accepting a Comparator
> Please review:
> 
> In addition i added an Objects.compare method, which simplifies the
> implementations of some object-bearing methods.

Why not put the method on Comparable?

The null handling choice seems arbitrary. Nulls last or nulls disallowed 
would be equally valid. As usual I favour nulls disallowed.