upon, because:
* it's MUCH quicker; no need to calculate the OBJDIRS of every library
we might require in every subdir.
(make obj drops from 21s to 3s on my system.)
* it's more robust when building to a fresh DESTDIR.
- Did not import opie, passwdqc, tacplus. We need to decide what to do
with them.
- Imported radius and ssh, although they will not work until we
import libradius and re-structure our tree to install libssh.
