dtrace tests: Regenerate makefiles after commit d0b2dbfa0ecf
Remove $FreeBSD$: one-line sh patternRemove /^\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 weekEvent: Waterloo Hackathon 2019