RFR: JDK-8199197: Set _NT_SYMBOL_PATH when running tests on windows

[Christian Tornqvist]

Hi Erik,

This looks good, many thanks for fixing this! 

Thanks,
Christian

> On Mar 7, 2018, at 12:06 32PM, Erik Joelsson <erik.joelsson at oracle.com> wrote:
> 
> When running tests on Windows in a distributed environment we currently don't have access to debug symbols, which causes stack traces in hs_err files to be useless. When running local tests this works because the product under test was built on the same machine and the debug symbols are still available there. For this to work in distributed testing, we need to both provide the symbols bundle as well as setting up the _NT_SYMBOL_PATH environment variable to point to the correct directories. This patch does just that for both the old and new test makefiles. I have verified by running a modified jtreg test in Mach5 that crashes hotspot and verified that the stack trace contains symbols.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8199197
> 
> Webrev: http://cr.openjdk.java.net/~erikj/8199197/webrev.01/
> 
> /Erik
>