RFR: 8272778: Consolidate is_instance and is_instance_inlined in java_lang_String [v2]

[Albert Mingkun Yang]

On Mon, 23 Aug 2021 08:56:59 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Simple change of merging `is_instance` and `is_instance_inlined`.
>> 
>> Test: build
>
> Albert Mingkun Yang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
> 
>  - more rename
>  - Merge branch 'master' into inline
>  - inline

Thank you for the review.

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PR: https://git.openjdk.java.net/jdk/pull/5201