New jtreg version numbers

[Jonathan Gibbons]

For folk that build jtreg from source, jtreg 5.0 has now been tagged in 
the repo.

-- Jon

On 2/5/20 2:12 PM, Jonathan Gibbons wrote:
> This is FYI for folk that use the OpenJDK Regression Test Harness, 
> jtreg, to run OpenJDK tests.
>
> For the past few years, jtreg has used a version numbering scheme "4.2 
> bNN" where NN slowly incremented, instead of a more conventional 
> "$MAJOR.$MINOR" numbering scheme. The reasons for this choice have 
> long since disappeared, and so going forward, jtreg will use a 
> "$MAJOR.$MINOR" numbering scheme, starting with 5.0.
>
> Along with this change, jtreg will also require JDK 8 or later to 
> compile and execute it.  That should not affect most people, for whom 
> JDK 8 or later has long been recommended, although not required.  In 
> the unlikely event that we need to fix an issue in a version of jtreg 
> that can run on JDK 7, we can provide an update based on the latest 
> 4.2 version.
>
> For those folk that build jtreg from the tip of the repo, you may 
> notice the related changes in the repo.
>
> -- Jon
>