RFR: CODETOOLS-7903150: Restructure generated files for jtreg self-tests [v2]

[Iris Clark]

On Thu, 7 Apr 2022 21:53:25 GMT, Jonathan Gibbons <jjg at openjdk.org> wrote:

>> Please review a mostly test-only fix to move all the output generated by the many jtreg self-tests into a new $(BUILDDIR)/test subdirectory, defined by a new BUILDTESTDIR variable.
>> 
>> All but two of the edited files are "just" test updates, and most of those were done with search/replace in the IDE. That gave a first pass, with about 90% success rate.  The remaining edits were done by fixing tests up manually, either because they had become broken, or because there were still writing files outside the $(BUILDTESTDIR) directory.
>> 
>> Of the two files that were edited that were not in the main `test` directory, one is in Defs.gmk, to define the new BUILDTESTDIR variable, and the other is in Makefile to add some opportunistic new clean targets.
>
> Jonathan Gibbons has updated the pull request incrementally with one additional commit since the last revision:
> 
>   ensure $(BUILDTESTDIR) created

Marked as reviewed by iris (Reviewer).

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PR: https://git.openjdk.java.net/jtreg/pull/69