This comes down to the lack of a 'seq' command (what?!) and the fact that
BSD "wc -l" returns extra whitespace, while the GNU version doesn't. We
should be using numeric comparisons instead of string comparisons, and then
it's ok.
...only when running under minimal/do, of course.
The tests in question mostly fail because they're testing particular
dependency-related behaviour, and minimal/do doesn't support dependencies,
so naturally it doesn't work.
If a file previously was generated but now isn't (ie. its .do file
disappears), we would never re-stamp that target, and so all its
dependencies would rebuild continually.
