later at pkg_delete time to verify that you're deleting what you added.
This, of course, does NOT cover the case where a file you still need
hasn't changed! That's a tougher problem to solve, and this provides
only the minimal amount of safety belt. MD5 checksums are stored in comment
fields, so packages produced with these tools are backwards compatible with
the older ones.
out by Bruce.
2. Add a "feature" to pkg_create (OK, OK, it's a miserable hack!) to get
it to dump its internal packing list out so that the `fake-pkg' rule in
bsd.port.mk can generate a more meaningful packing list.
