hg: jigsaw/jake/jdk: Replace exported-private with open

[chris . hegarty]

Changeset: 3750898360d0
Author:    chegar
Date:      2016-11-23 09:55 +0000
URL:       http://hg.openjdk.java.net/jigsaw/jake/jdk/rev/3750898360d0

Replace exported-private with open

! src/java.base/share/classes/java/lang/Class.java