RFR: 7903920: Support building jtreg on FreeBSD

[snake66]

On Sat, 25 Jan 2025 20:38:13 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> (uness BSD does thing different in this regard and install all user-installed packages in /usr/local?)

Yep, that's how FreeBSD does things. (Technically the prefix can be something different than /usr/local, but that's the default.)

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PR Review Comment: https://git.openjdk.org/jtreg/pull/237#discussion_r1929691653