RFR: 8313312: Add missing classpath exception copyright header [v2]

[Roger Riggs]

On Fri, 28 Jul 2023 17:39:18 GMT, Amit Kumar <amitkumar at openjdk.org> wrote:

>> Adds `classpath exception` in multiple files, affects copyright header only.
>
> Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:
> 
>   revert java.lang.foreign changes

Since we're past RPD2, this will need approval before this can be included.
(This is not just code review, but review from the Group and area leads)

Please re-read, JEP 3: https://openjdk.org/jeps/3#Bug-Deferral-Process
and on down the "Fix Request" process.

Please change the bug priority to P2; that is needed to be considered.

Add a comment as described headlined with "Fix Request" and the described rationale and information.

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PR Comment: https://git.openjdk.org/jdk/pull/15070#issuecomment-1658909687