RFR: JDK-8213005: Missing symbols in hs_err files on Windows after JDK-8212028

[Christian Tornqvist]

Hi Erik,

This looks good, thanks for fixing this!

Thanks,
Christian

> On Oct 25, 2018, at 4:27 PM, Erik Joelsson <erik.joelsson at oracle.com> wrote:
> 
> When running tests through the new RunTest makefile framework in Mach5, we are now missing symbol information in hs_err files on Windows. This is caused by the new run-test-prebuilt target not properly setting up _NT_SYMBOL_PATH which in turn is caused by the variable CYGPATH not being set.
> 
> This patch sets CYGPATH in RunTestPrebuiltSpec.gmk. I also modified some cosmetics in the _NT_SYMBOLS_PATH setup to make it easier to understand, at least for me.
> 
> Verfied by running "run-test-prebuilt" with a fastdebug build and setting JTREG=JAVA_OPTIONS=-XX:ErrorHandlerTest=14. With the fix, the generated hs_err*.log contains symbols in the stacktrace.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8213005
> 
> Webrev: http://cr.openjdk.java.net/~erikj/8213005/webrev.01/make/RunTests.gmk.sdiff.html
> 
> /Erik
>