RFR: 8289780: Avoid formatting stub names when Forte is not enabled [v2]

[Ioi Lam]

On Wed, 6 Jul 2022 01:24:09 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Do not remove Forte::register_stub as it is used on Linux as well
>
> Cleanup looks good! Thanks.

Thanks @dholmes-ora, @sspitsyn, @coleenp for the review.

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PR: https://git.openjdk.org/jdk/pull/9386