RFR: 8261131: jcmd jmap dump should not accept gz option with no value [v2]

[Chris Plummer]

On Fri, 5 Feb 2021 06:38:53 GMT, Lin Zang <lzang at openjdk.org> wrote:

>> 8261131: jcmd jmap dump should not accept gz option with no value
>
> Lin Zang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   remove useless code and update copyright

Marked as reviewed by cjplummer (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/2399