One more thing to be added.

The data files should be installed under the directory of
/sys/lib/ghostscript/, and that directory contains two
sub directory (trees)
/sys/lib/ghostscript/fonts:	Type 1 fonts
/sys/lib/ghostscript/8.13/
					lib:	postscript files, cidfmap and that's other candidates, Fontmaps, xlatmap
						copy those files from /sys/src/cmd/gs trees by hand
					Resource/CIDFont:  Japanese CID fonts
					Resource/CMap:   many CMap files
					Resource/ColorSpace:
					Resource/Decoding:
					examples:		standard examples and Japanese ones
					doc:
					man:

Kenji