RFR: 8214782: Add missing access barriers on CLD handle area

[Per Liden]

Thanks Coleen!

/Per

On 2018-12-04 16:45, coleen.phillimore at oracle.com wrote:
> Looks good.
> Coleen
> 
> On 12/4/18 7:48 AM, Per Liden wrote:
>> The CLD handle area contains raw oops. Those oops should be 
>> manipulated using NativeAccess barriers. Two such barriers are 
>> currently missing.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8214782
>> Webrev: http://cr.openjdk.java.net/~pliden/8214782/webrev.0
>>
>> /Per
>