I notice that packages' buildlink.mk tend to specify several
BUILDLINK_FILES.<package> that are also listed in PLIST. This is a lot
of duplication, especially for longer file lists. Would it make more
sense to instead put these filenames in PLIST.buildlink? The PLISTs
could then be merged at install time, and the buildlink code could get
BUILDLINK_FILES.<package> by reading PLIST.buildlink.

- Amitai