Support for building jtreg on FreeBSD

[Harald Eilertsen]

Hi,

I have been contracted by The FreeBSD Foundation to improve Java on
FreeBSD. As part of that I've made some patches to make jtreg build
successfully on that platform, and also pass the self tests.

I'd like to check if there's any chance for getting these changes
included upstream. That would be a great benefit to the further Java on
FreeBSD work.

My patches are here, if anybody would be so kind to have a look:
https://github.com/openjdk/jtreg/compare/master...snake66:jtreg:freebsd-port

The one thing I can think of that may be controversial is that I've made
the makefiles pick up the zip and unzip binaries from $PATH. If you want
to keep the hardcoded absolute paths instead, I'll fix that.

Thanks in advance,

Harald Eilertsen
--
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