RFR: JDK-8241421 Cleanup handling of jtreg

[Jonathan Gibbons]

On 3/23/20 6:06 AM, Erik Joelsson wrote:
>
> The environment variable name JT_HOME is defined by Jtreg itself so I 
> think it makes sense to use that. Configure is still honoring it, but 
> run-test-prebuilt is not. We can of course use a different variable 
> name internally, but I don't really see the reason as JT_HOME is the 
> generally accepted one. 

Would it help to migrate jtreg towards using JTREG_HOME, as a preferred 
alternative to JT_HOME?

-- Jon