default tic label format

Hello,

While trying the 3.8k.1 version of gnuplot, I noticed that the default
format for the labels on the axis is "% g".
This has two (minor) disadvantages, compared to simple "%g" as it was
in version 3.7:
- labels on horizontal axes are not centered nicely (the invisible
  leading space is included in the centering calculation).
- labels on the y2 axis (if used) start farther away from the axis
  than the y1 axis labels do.

Actually, I remember already briefly discussing this with Lars a few
years ago; he then wrote:

>  I remember that change, and that there was a reason for it ...
> 
> Yep, it was suggested to me by Lucas Hart:
> 
> |  BTW, I find DEF_FORMAT "% g" more legible for tables than "%g"; any 
> |  effect on labels that would preclude a change?  Also, since you are 
> 
>  I suppose your observation qualifies for Lucas' condition ...

Obviously, I would suggest changing to "%g" before the release of 4.0.

Best regards,
  Pieter-Tjerk