RFR: 8336679: Add @implSpec for the default implementations in Process.waitFor() [v4]

[Brian Burkhalter]

On Wed, 24 Jul 2024 16:41:46 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> This is a simple doc-only change that follows up [JDK-8336479](https://bugs.openjdk.org/browse/JDK-8336479). A corresponding CSR has also been drafted.
>
> Naoto Sato has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Update src/java.base/share/classes/java/lang/Process.java
>    
>    Co-authored-by: ExE Boss <3889017+ExE-Boss at users.noreply.github.com>
>  - Update src/java.base/share/classes/java/lang/Process.java
>    
>    Co-authored-by: ExE Boss <3889017+ExE-Boss at users.noreply.github.com>

Marked as reviewed by bpb (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/20285#pullrequestreview-2197270404