RFR: JDK-8077055 : Allow other named SecurityPermissions, RuntimePermissions, and AuthPermissions to be used

[Sean Mullan]

Please review this small specification change to allow implementations 
to define additional implementation-specific target names for 
SecurityPermission, RuntimePermission, and AuthPermission:

webrev: http://cr.openjdk.java.net/~mullan/webrevs/8077055/webrev.00/
bug: https://bugs.openjdk.java.net/browse/JDK-8077055

Thanks,
Sean