math/lapack: fix "argument list too long"

Older FreeBSD versions have a too small ARG_MAX, and making the plist
failed with the "argument list too long" error.

This patch sticks to using files and pipelines rather than long command
line argument lists, authored by John Hein <jcfyecrayz@liamekaens.com>.

PR: 257004
Reported by: russo (at) bogodyn.org

(cherry picked from commit 37e3e66b0de6644dabe631c8a68d58c7cca14f32)