RFR: CODETOOLS-7903568: Allow `-show:stream file.jtr`

[Iris Clark]

On Fri, 8 Dec 2023 22:36:40 GMT, Jonathan Gibbons <jjg at openjdk.org> wrote:

> Please review an update to permit a new command-line form
> 
>      jtreg -show:stream path/to/test.jtr
> 
> Currently, the desired test can only be specified via the "standard" options for a test suite and path within a test suite.
> This change makes it possible to specify a single `.jtr` file directly. This may be particularly useful to extract the `rerun` output that is within each `.jtr` fie.

Marked as reviewed by iris (Reviewer).

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PR Review: https://git.openjdk.org/jtreg/pull/176#pullrequestreview-1830202968