hg: jdk9/sandbox/jdk: 8181295: Document that SecurityManager::checkPackageAccess may be called by the VM

[chris.hegarty at oracle.com]

Changeset: d0a0f9e3cf9f
Author:    mullan
Date:      2017-06-19 08:16 -0400
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/d0a0f9e3cf9f

8181295: Document that SecurityManager::checkPackageAccess may be called by the VM
Reviewed-by: mchung

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