RFR: 6996: Properly support converters [v8]

[Guru Hb]

On Fri, 27 Nov 2020 18:14:12 GMT, Marcus Hirt <hirt at openjdk.org> wrote:

>> Including simple test to verify that the resulting instrumented methods are ok.
>
> Marcus Hirt has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Formatting
>  - Excluding abstract and interface methods

Please update README.md

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Changes requested by ghb (Reviewer).

PR: https://git.openjdk.java.net/jmc/pull/168