"nanobsd" prototype

[M. Warner Losh]

In message: <52729.1079033952 at critter.freebsd.dk>
            "Poul-Henning Kamp" <phk at phk.freebsd.dk> writes:
: I want nanobsd to use the normal build/installworld targets, but feel
: free to prune your system in the Customize target.

Maybe it is time to have a generic way to include/exclude directories
from installworld, but not buildworld.  This lack is one of the main
reasons that I have a custom install script rather than using
installworld for the build environment we have at work.

Warner