RFR (xxs): JDK-8130823 - VerifyRememberedSets is an expensive nop in product builds

[Jon Masamitsu]

Jesper,

Change looks good.

Jon

On 9/2/2015 10:53 AM, Jesper Wilhelmsson wrote:
> Hi,
>
> Please review this minor fix to change an assert into a guarantee to 
> enable VerifyRememberedSets in product builds.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8130823
>
> Webrev: http://cr.openjdk.java.net/~jwilhelm/8130823/webrev.00/
>
> Thanks,
> /Jesper