[Toybox] Sigh. What needed setlinebuf(break_everything) again?

[Rob Landley]

Because it broke watch. (When you fill the screen it never displays the last
line of output until you hit "q".) And it broke tee, and it broke...

Why did it go in again? What was the problem being solved? I've noticed that I'm
using a lot more dprintf(1, "blah") these days just to prevent having to deal
with the fact that xprintf() got broken and no longer actually produces output
until random future things happen...

Rob