hg: jdk9/sandbox/jdk: 8059361: Properties.stringPropertyNames() returns a set inconsistent with the assertions from the spec

[chris.hegarty at oracle.com]

Changeset: f6af8273cffa
Author:    smarks
Date:      2016-06-01 13:47 -0700
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/f6af8273cffa

8059361: Properties.stringPropertyNames() returns a set inconsistent with the assertions from the spec
Reviewed-by: mchung

! src/java.base/share/classes/java/util/Properties.java