hg: jdk/sandbox: 8202216: Add Buffer mismatch methods

[chris.hegarty at oracle.com]

Changeset: 7cf6578a6b0b
Author:    vtheeyarath
Date:      2018-06-14 23:09 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/7cf6578a6b0b

8202216: Add Buffer mismatch methods
Reviewed-by: plevart, psandoz

! src/java.base/share/classes/java/nio/X-Buffer.java.template
! test/jdk/java/nio/Buffer/EqualsCompareTest.java