8177474: Do not emit warnings when illegal access is allowed by --add-exports/--add-opens

[Chris Hegarty]

> On 23 Mar 2017, at 19:16, Alan Bateman <Alan.Bateman at oracle.com> wrote:
> 
> I'd like to get jdk9/dev updated to align with the latest proposal for --add-exports/--add-opens to not emit warnings. I've put the webrev with the changes here:
> 
>    http://cr.openjdk.java.net/~alanb/8177474/webrev/index.html

These changes look good to me Alan.

-Chris.