reorganized AML terrain scripts to reduce superficial redundancy

renamed script to multiscalesmooth.R

numerous comment, format, and variable name changes

now actually refining before smoothing (GRASS version)

reversed order of refine-and-smooth step

added GRASS/Python implementation of multiscale smoother

added R script to run multiscalesmooth example on Oregon SRTM

switched to more accurate chisq test

enhanced smoother to accept sd as a raster, not just a constant

tweaked var names to match Gallant pub; added comments

fixed vwg step

continued R translation of multiscale smoother

initial R translation of multiscale smoother

added old Oregon topo AML scripts (Tien Ming Lee, John Gallant)

finished organisms->layers content migration

folded Nunokawa backup file changes into vrt script file

cleaned up file permissions

added in various previously uncommitted scripts

reorganized terrain-related files