RFR (XS) 8229998: Build failure after JDK-8227054

[Roman Kennke]

Looks ok to me. Let Zhengyu also look at it.

Thanks,Roman

> Bug:
>   https://bugs.openjdk.java.net/browse/JDK-8229998
> 
> Fix:
>   https://cr.openjdk.java.net/~shade/8229998/webrev.01/
> 
> This is caused by rewiring for new OopStorage accessors. I think I got the new mappings correctly.
> The other part of the build fix is JDK-8230024, which I do separately as backportable change.
> 
> Testing: hotspot_gc_shenandoah {fastdebug,release}
>