RFR: 8310643: Misformatted copyright messages in FFM

[Per Minborg]

On Sat, 29 Jul 2023 12:29:13 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> This PR suggests updating some of the ill-formed copyright headers in the FFM API and the implementation and test thereof.
>> 
>> Some of the test files will have now the "classpath" exception. Is this correct?
>
> src/java.base/share/classes/java/lang/foreign/GroupLayout.java line 25:
> 
>> 23:  * questions.
>> 24:  */
>> 25: 
> 
> Is there some style guideline that says there needs to be a blank line here?

This is common for many JDK files.

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PR Review Comment: https://git.openjdk.org/jdk/pull/15042#discussion_r1285558048