reorganization:
print/ghostscript-gnu -> print/ghostscript7
print/ghostscript-gnu-nox11 -> print/ghostscript7-nox11
print/ghostscript-gnu-commfont -> print/ghostscript7-commfont
print/ghostscript-gpl -> print/ghostscript8
print/ghostscript-gpl-nox11 -> print/ghostscript8-nox11
japanese/ghostscript-gnu-jpnfont -> print/ghostscript7-jpnfont
korean/ghostscript-gnu-korfont -> print/ghostscript7-korfont
and clean up Makefile of each port for the changes, and assign the
maintainers to doceng@.
Not hooked up to the build yet because it needs more fixes in
dependent ports and bsd.port.mk.
PR: ports/124157
