RFR: 8255858: Add debug agent support for storing thread names

[Serguei Spitsyn]

On Tue, 3 Nov 2020 23:30:38 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

> Simple change to add a `name` field to `ThreadNode` to aide when debugging the debug agent. It's off by default. You need to add a `#define DEBUG_THREADNAME` to enable it.

Chris,
It looks good.
Thanks,
Serguei

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Marked as reviewed by sspitsyn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1047