hg: jdk/submit: 8202285: (fs) Add a method to Files for comparing file contents

[huizhe.wang at oracle.com]

Changeset: 66a0e6b3ec1a
Author:    joehw
Date:      2018-11-08 09:50 -0800
URL:       http://hg.openjdk.java.net/jdk/submit/rev/66a0e6b3ec1a

8202285: (fs) Add a method to Files for comparing file contents
Reviewed-by: alanb, rriggs, smarks, bpb, dfuchs, weijun, igerasim

! src/java.base/share/classes/java/nio/file/Files.java
+ test/jdk/java/nio/file/Files/Mismatch.java