editors/emacs-devel: Build pure GTK Emacs by default
- Add PGTK to OPTIONS_DEFAULT
- Remove M17N, OTF, XFT, XIM, and XPM from OPTIONS_DEFAULT
- Eliminate X11 dependencies for pure GTK Emacs by
- removing CAIRO_IMPLIES=XFT and OTF_IMPLIES=XFT
- adding CAIRO_PREVENTS=XFT and PGTK_PREVENTS=M17N XFT XPM
- not including USES=xorg.
While here, pull in a new 2022-01-03 revision and incorporate minor formatting changes suggested by portfmt.
Reported by: jbeich
Sponsored by: The FreeBSD Foundation