Add several missing dependencies, as reported by `make stage-qa`.
Clean up port options:
o `COLORD` and `OPENEXR` had an incomplete an dependencies list.
o `NLS` was broken when turned off.
o `RAWSPEED` and `SQUISH` were not CMake knobs anymore in darktable.
Approved by: mat
Differential Revision: https://reviews.freebsd.org/D7147
a4d2b1102a