RFR: 7903920: Support building jtreg on FreeBSD

[snake66]

On Thu, 23 Jan 2025 19:55:38 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

>> Wouldn't this pretty much just be the same as just not specifying the path at all, and let the shell find it in $PATH? Which was [one of the complaints](https://github.com/openjdk/jtreg/pull/237#issuecomment-2543058251) against my first patch.
>
> Okay, people have apparently varying opinions on this. :) Don't want to put you in a "damned if you do, damned if you don't" situation, so just ignore my comment and go with your solution.

I don't have any strong opinions about this, but for FreeBSD's part it would actually be slightly better to let the shell find the binaries in $PATH. But it's not important for my progress now, so I figured I'd deal with it if it comes up :)

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PR Review Comment: https://git.openjdk.org/jtreg/pull/237#discussion_r1927617050