dtrace tests: Regenerate makefiles after commit d0b2dbfa0ecf
Remove $FreeBSD$: one-line sh pattern Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/
Hook up the existing i386 DTrace tests to the build. Now that it's relatively easy to do so, we might as well. MFC after: 1 week Event: Waterloo Hackathon 2019