[GRASS-dev] Rast_set_window() changes in 7.0

[Glynn Clements]

r42876 implements a fairly invasive change to the raster window
handling in 7.0. Specifically:

1. Modules which read and write maps at different resolutions now make
use of the ability to set separate input and output windows
(Rast_set_input_window() and Rast_set_output_window()).

2. Changing the input/output window while maps are open for read/write
(respectively) now generates a fatal error. There should be no need to
do so, and I want to get bug reports for any cases I've overlooked. 
Rast_set_window() changes both the input and output windows.

I would appreciate it if people can test any affected modules. 
Specifically, the following are the modules and libraries which called
Rast_set_window:

	display/d.rast.arrow
	display/d.rast.num
	general/g.region
	imagery/i.atcorr
	imagery/i.ifft
	imagery/i.rectify
	lib/display
	lib/gpde
	lib/lidar
	lib/rst/interp_float
	ps/ps.map
	raster/r.basins.fill
	raster/r.category
	raster/r.coin
	raster/r.compress
	raster/r.describe
	raster/r.external
	raster/r.flow
	raster/r.horizon
	raster/r.in.arc
	raster/r.in.ascii
	raster/r.in.bin
	raster/r.in.gdal
	raster/r.in.gridatb
	raster/r.in.mat
	raster/r.in.png
	raster/r.in.poly
	raster/r.neighbors
	raster/r.null
	raster/r.proj
	raster/r.recode
	raster/r.resamp.bspline
	raster/r.resamp.filter
	raster/r.resamp.interp
	raster/r.resamp.rst
	raster/r.resamp.stats
	raster/r.rescale
	raster/r.slope.aspect
	raster/r.sun
	raster/r.support.stats
	raster/r.support
	raster/r.surf.idw2
	raster/r.to.rast3
	raster/r.to.rast3elev
	raster/simwe/simlib
	raster3d/r3.cross.rast
	raster3d/r3.out.vtk
	raster3d/r3.to.rast

In particular, anything using the gpde, lidar or rst libraries should
be a priority.

FWIW, the rationale behind the "split window" functionality is to
avoid having r.resamp.* continually changing the window between the
input and output resolutions, as this causes the column mapping to be
regenerated for the input map each time.

-- 
Glynn Clements <glynn at gclements.plus.com>