RFR: 8227587: Add internal privileged System.loadLibrary

[Chris Hegarty]

> On 16 Jul 2019, at 14:48, Claes Redestad <claes.redestad at oracle.com> wrote:
> 
> Hi,
> 
> refactored to use a BootLoader::loadLibrary API that is only visible
> within the java.base module:
> 
> http://cr.openjdk.java.net/~redestad/8227587/open.03/

I think that this is good Claes. Reviewed.

-Chris.