RFR 8171380: Remove exports from jdk.jlink

[Mandy Chung]

> On Jan 16, 2017, at 7:46 AM, Chris Hegarty <chris.hegarty at oracle.com> wrote:
> 
> The Jlink Plugin API is not going to be supported in 9, so
> should not be exported [1], for use by third parties. Besides
> the removal of the export, most of the changes are adding
> @modules tags to existing tests.
> 
> http://cr.openjdk.java.net/~chegar/8171380.00/
> 
> :
> 
> This change depends on fix in jtreg b05 [3], so bumps the
> minimum required version.
> 

langtools/test/TEST.ROOT should also be updated as there are tests in langtools/test also depending on the fix for jtreg b05.

Otherwise looks good.

Mandy