[11u]: Backport of RFR 8211122: Reduce the number of internal classes made accessible to jdk.unsupported (and JDK-8205537 and JDK-8211121)

[Andrew Haley]

On 6/24/19 3:23 PM, Langer, Christoph wrote:
> The original issues didn't have CSRs attached but it really feels CSRish. Let me know whether I shall create CSRs as you're still sorting out the process.

Please go ahead. This is a small change that'll be a good test of the process.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671