RFR [11] 2018-12-10: Bulk backports to sh/jdk11

[Roman Kennke]

Same here. I don't know if we want to backport this. This move was to be
consistent with the rest of VM naming.

Roman

> http://cr.openjdk.java.net/~shade/shenandoah/backports/jdk11-20181210/webrev.01/
> 
> This backports recent work to sh/jdk11. It was a quiet half-week, so we have only one thing to
> backport, to get Monday backports on track:
> 
> [backport] Rename vm_operations_shenandoah.* to shenandoahVMOperations.*
> 
> Testing: hotspot_gc_shenandoah {fastdebug|release}
> 
> -Aleksey
>