RFR: 8139271: Add top-level Makefile target to run hotspots jtreg tests

[Magnus Ihse Bursie]

Looks good to me. 

/Magnus

> 9 okt 2015 kl. 14:23 skrev Erik Helin <erik.helin at oracle.com>:
> 
> Hi all,
> 
> this patch adds a new top-level Makefile to run the hotspot jtreg tests.
> This is already possible today by running:
> $ make test TEST="hotspot_all"
> 
> The new target, test-hotspot-jtreg, is a bit more discoverable in my
> opinion (will also work with tab completion in supported shells).
> 
> Enhancement:
> https://bugs.openjdk.java.net/browse/JDK-8139271
> 
> Webrev:
> http://cr.openjdk.java.net/~ehelin/8139271/webrev.00/
> 
> Thanks,
> Erik