RFR: 8272586: emit abstract machine code in hs-err logs [v2]

[Vladimir Kozlov]

On Wed, 6 Oct 2021 16:41:39 GMT, Doug Simon <dnsimon at openjdk.org> wrote:

>> This enhances hs-err logs to:
>> * Show the [abstract machine code](https://bugs.openjdk.java.net/browse/JDK-8213084) of the crashing frame if a disassembler is not installed.
>> * Show machine code for the top frames on the native stack.
>> 
>> An interpreter or stub frame is only shown if it is the crashing frame.
>> 
>> A sample of the enhanced hs-err log can be seen [here](https://bugs.openjdk.java.net/secure/attachment/96664/hs_err_pid7179.log).
>
> Doug Simon has updated the pull request incrementally with one additional commit since the last revision:
> 
>   use nullptr instead of 0 or implicit NULL tests

Good.
Someone from runtime group have to look on this too.

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Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/5446