Axes and autoscaling on new gnuplot

[Tait <gnu...@t4...>]

I'm sorry this is so vague, but has anybody noticed any unusual
behavior around autoscaling and "plot 'file' ... axes ..." in the
new gnuplot builds (on Windows, if it matters)?

I will try to investigate and create something reproducible, but I was
in a hurry at the time. It seemed like either autoscale wasn't working
at all, or that writeback was somehow enabled, even though gnuplot
reported nowriteback.