RFR: 8369573: Add missing compile commands help documentation for the signature part of method patterns

[Daniel Lundén]

On Wed, 15 Oct 2025 08:48:36 GMT, Anton Seoane Ampudia <aseoane at openjdk.org> wrote:

>> The documentation of the signature part of method patterns in `java -XX:CompileCommand=help` is missing. We should add it.
>> 
>> ### Changeset
>> - Improve the documentation of signatures in `java -XX:CompileCommand=help`.
>> 
>> ### Testing
>> 
>> - [GitHub Actions](https://github.com/dlunde/jdk/actions/runs/18500483034)
>> - `tier1` and HotSpot parts of `tier2` and `tier3` (and additional Oracle-internal testing) on Windows x64, Linux x64, Linux aarch64, macOS x64, and macOS aarch64.
>
> Nice documentation! LGTM
> 
> As a side note, looking at your line splits I got curious whether we are actively enforcing an 80-char limit in some output or not (the last two "paragraphs" exceed this size, although they've been there from before)

GHA is green after the change. Going ahead with integration. Thanks for the reviews @anton-seoane @robcasloz @TobiHartmann!

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PR Comment: https://git.openjdk.org/jdk/pull/27818#issuecomment-3411343545