RFR: 8293051: Further refactor javac after removal of -source/-target/--release 7 [v2]

[Vicente Romero]

On Fri, 2 Sep 2022 23:20:59 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> that can be worked out I think as I did with other tests, it should show up in the mach5 run, are you referring to: `PreviewHiddenClass.java`?
>
> Pretty sure the test in question was under java.lang.invoke in the libraries (i.e. test/jdk vs test/langtools) area.
> 
> If we come up for a supported idiom for this, there is at least one other test I'd want to update to use it; that can be done as future work.

all tier1-3 tests are passing in mach5

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PR: https://git.openjdk.org/jdk/pull/10150