RFR 8154447: Exempt classes under java.util.concurrent from MH.Lookup restrictions

[Mandy Chung]

> On Apr 26, 2016, at 3:01 PM, Paul Sandoz <paul.sandoz at oracle.com> wrote:
> 
> Hi,
> 
> Please review:
> 
>  http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8154447-mh-lookup-restricted-pkgs/webrev/ <http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8154447-mh-lookup-restricted-pkgs/webrev/>
>  https://bugs.openjdk.java.net/browse/JDK-8154447 <https://bugs.openjdk.java.net/browse/JDK-8154447>
> 
> This is a quick fix to allow classes under java.util.concurrent to call MethodHandles.lookup(), and thus unblock the use of such classes using VarHandles.
> 

This quick fix looks okay to me.  This big hammer check was intended to be an expedient way to address a past security concern and should be replaced.

Mandy