RFR 8147491: module graph consistency checks after jlink plugins operate on module pool

[Mandy Chung]

> On Aug 25, 2016, at 9:24 PM, Sundararajan Athijegannathan <sundararajan.athijegannathan at oracle.com> wrote:
> 
> Hi Mandy, Paul,
> 
> Thanks for the reviews. Updated webrev as per suggestions:
> 
> http://cr.openjdk.java.net/~sundar/8147491/webrev.02/

Looks good.

Mandy