r.pack collects raster map elements and support files and
compressed them using gzip algorithm for copying. The packed
file can be afterwards unpacked
by r.unpack.
NOTES
Name of the pack file is determined by default from input
parameter. Optionaly the name can be given by output parameter.
Currently only 2D raster maps are supported.
Original Bash script written by Hamish Bowman, Otago University, New Zealand
Converted to Python and updated for GRASS 7 by Martin Landa, CTU in Prague, Czech Republic