RFR: 8277627: Fix copyright years in some jvmci files [v2]

[Vladimir Kozlov]

On Tue, 11 Jan 2022 08:52:54 GMT, Emanuel Peter <duke at openjdk.java.net> wrote:

>> Fixed copyright years from "xxxx, xxxx" to "xxxx" (if same year mentioned twice), according to copyright year specification.
>> Updated the second year (last edit) where missing (thanks @vnkozlov for catching this).
>> 
>> Checked that tests are not affected.
>
> Emanuel Peter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Checked for latest edit year, added it into copyright where missing

Good.

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Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/6985