[Xastir] FGD files and Re: bounding boxes

[Tyler Allison]

> Because you're not needing to crop, go back to the averaging idea
> and try that.  Xastir should only crop a pixel or three from each
> side in that case, as if I remember correctly, your numbers were
> pretty close to each other to begin with.

I think there's something more nefarious going on than getting the right
lon/lat put together.  Im just not as familiar with geotiff as I need to
be to figure it out.

-Tyler