JVMCI 0.50, 0.51, 0.52 released

[Doug Simon]

> On 17 Nov 2018, at 02:11, Halimi, Jean-Philippe <jean-philippe.halimi at intel.com> wrote:
> 
> Hi Doug,
>  
> Fo you plan to port JVMCI 0.52 to JDK11 as well?

I had not planned on this but it would make sense to back port them.

-Doug