hg: jdk/sandbox: 8217393: Clarify Attributes.equals()

[chris.hegarty at oracle.com]

Changeset: 53c72d9d962b
Author:    lancea
Date:      2019-02-04 14:10 -0500
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/53c72d9d962b

8217393: Clarify Attributes.equals()
Reviewed-by: alanb, darcy, rriggs, martin

! src/java.base/share/classes/java/util/jar/Attributes.java