Rework to depend on emulators/qemu for any ancillary files rather than
installing a conflicting set.[0]
Disable more automatically detected bits so dependencies are correct
when built manually.
Requested by: jhb[0]
Sponsored by: DARPA, AFRL
Switch qemu-cheri128 to compressed 128-bit capabilities per the soon to be
released ISA v5. Introduce a new qemu-cheri128m port which retains
support for 128-bit capabilities that magically store 256-bit of data
preserving semantic compatiblity with 256-bit capabilities while having
128-bit size and alignment requirments.
