We're printing most of those those as mm/s now, improve to use gnuplot for
loops, and a few other fixes. The low-dpi graph is still out of whack (or the
implementation is?), need to fix that separately.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Partial fix only because we can't guess the build dir, but at least it doesn't
complain about the missing script now. And no-one really needs to run this
anyway.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>