Re-add MAKE_JOBS_UNSAFE. From mat:
- scratch --- cp config.mk.dist auto/config.mk
- clean --- make[2]: "/wrkdirs/usr/ports/editors/vim/work/vim-8.0.0149/src/po/Makefile" line 4: Could not find ../auto/config.mk make[2]: Fatal errors encountered -- cannot continue
Install desktop files and icons when the GNOME, GTK2, or GTK3 knobs are turned
on. Requested by Kevin Zheng. PORTREVISION bump for this.