[master] RFR: 8319524: [Lilliput] Only warn when compact headers are explicitly enabled

[Aleksey Shipilev]

On Mon, 6 Nov 2023 11:13:44 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

> We currently print a warning when a user specifies +UseZGC together with +UseCompactObjectHeaders. We should only print the warning when +UCOH is explicitly enabled at the command-line. This may not be very relevant at the moment, but might be in the future, or in downstreams which may want to enable compact headers by default.
> 
> When building with +UCOH by default, a number of langtools:tier1 tests are failing because of the warning.
> 
> Testing:
>   - [x] langtools:tier1 (+UseZGC and hardcoded +UCOH)

Marked as reviewed by shade (Committer).

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PR Review: https://git.openjdk.org/lilliput/pull/115#pullrequestreview-1714996621