RFR: 1704: Add or update copyright header in some files

[Zhao Song]

On Fri, 2 Dec 2022 00:05:14 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> So you updated 350+ files manually? 👀 🙀
> 
> Apart from the fact that this must have been tedious work for you, I recommend in the future that you write a script to do stuff like this, since it is less likely to make a mistake. It is basically impossible for anyone to review if all these files have correct years, and you might have made a mistake when covering this many files. A script, on the other hand, can be presented to the reviewers, and then they can get additional confidence in that it has done the right thing.

Ah, yes, I must find a better way to do this. Whatever, it's over for now. 😄

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PR: https://git.openjdk.org/skara/pull/1431