#9 All image drawing should take place in the projection class

[John Foerch]

Now, geoformats draw themselves onto the map image.
This design has at least a couple of severe limitations.

* Lots of duplicated drawing code in each geoformat class.
* Makes it very difficult to add non-rectilinear-grid
projections.

The way it should be is that geoformats will have the
task of creating a data structure of geographic
information, which they will pass to the projection
object. The projection object will then interpret that
data structure and draw the image layer.

I have marked this item as highest priority because it
is the biggest redesign of the mapper that I want to
accomplish at this point, and on it hinge many other ideas.

[John Foerch]

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This is mostly done. The coordinatelist, gpx, and shapefile
modules are converted over, and now delegate all image
drawing to the projection. I still have to rewrite the grid
module. The others- text, background, graphiclayer -will
stay as they are, containing their own image drawing code.