The mistake was completely on my part, I somehow connected the dots the
wrong way in my head.
The only exceptions (for now) are archivers/zstd and ports-mgmt/synth
which were already picked up by new volunteers in the mean time.
The "8" refers to FreeBSD 8.x which is no longer supported by the
ports tree. It's never been used (to my knowledge) so just remove the
option altogether.
When on used FreeBSD, this tool doesn't do anything. However, when used
on DragonFly, it will define __FreeBSD__ appropriately in CFLAGS which
allows the port to build with minimal or no extra patches.
Differential Revision: https://reviews.freebsd.org/D950
Reviewed by: portmgr
Approved by: bapt (portmgr)
