[lilliput-jdk17u:lilliput] RFR: 8310531: [Lilliput/JDK17] Revert unnecessary test code modifications and fix the tests

[Aleksey Shipilev]

On Wed, 21 Jun 2023 14:30:44 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> I have walked through the diff against 17u upstream, and reverted the disabled tests that pass with both `+UCOH` and `-UCOH`, and fixes a few others to work with `+UCOH` correctly. This brings us very close to 17u upstream testing-wise.
> 
> Additional testing:
>  - [x] Linux x86_64 fastdebug, `tier1` (default, `-UCOH`)
>  - [x] Linux x86_64 fastdebug, `tier1` (`+UCOH`)

Testing looks fine.

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PR Comment: https://git.openjdk.org/lilliput-jdk17u/pull/38#issuecomment-1601331897