RFR(T) 8230680: latest Graal unittests depend on jdk.internal.module

[Igor Ignatyev]

LGTM,

-- Igor

> On Sep 5, 2019, at 6:55 PM, dean.long at oracle.com wrote:
> 
> https://bugs.openjdk.java.net/browse/JDK-8230680
> http://cr.openjdk.java.net/~dlong/8230680/webrev/
> 
> This fix adds access to jdk.internal.module to the javac command-line that builds the Graal unit tests.  This is needed for the next merge with upstream Graal.
> 
> dl