Some ports were already installing in the System domain, for these just remove the Makefile lines explicitly specifying the install domain.
The rest are installed in the Local domain, remove any overrides, update their pkg-plists and any explicit paths in the Makefiles and then bump port revision.
Approved by: bapt (mentor)
Differential Revision: https://reviews.freebsd.org/D2977
Simplify gnustep ports
Hook into the regular ports framework:
- LIB_DEPENDS for library dependencies
- Use regular USE_LDCONFIG
Reuse USES=objc (automatic)
USE_GNUSTEP is now a macro to set the dependencies and build feature needed.
Accepted arguments: back base build gui
Merge deskutils/preferencepanes into deskutils/systempreferences