[GRASS5] [bug #939] (grass) d.barscale ignores PROJ_UNITS

[Glynn Clements]

Request Tracker wrote:

> Subject: d.barscale ignores PROJ_UNITS

> Helena reported to me (and I tend to agree) that d.barscale 
> ignores PROJ_UNITS. In case one work in a feet State Plane
> coordinate system, d.barscale will report nonsense.

I've fixed this (well, I think so; either that or I've squared the
error factor).

I'm presuming that the bug treated units as metres, resulting in the
bar being too small (e.g. a "5km" bar was really 5000 ft). The bar now
gets larger as the "meters" setting in PROJ_UNITS gets smaller.

-- 
Glynn Clements <glynn.clements at virgin.net>