Threads on devel/boehm-gc as default?

[Kozachuk Oleksandr <ddeus.pkgsrc%mailnull.com@localhost>]

Hello!

At the moment the option "threads" is only on Darwin default.
NetBSD fully supports pthreads, so what do you think about to add
also on NetBSD the option "threads" to "PKG_SUGGESTED_OPTIONS"?

For most packages it will make no difference, but on packages with
threads support you will not get an unthreaded boehm-gc.

Maybe threads for boehm-gc should be default for all systems?

Thanks,
Alex.