I'm considering setting up a framework for maintainng changes relative
to -current, not using CVS (I don't have the disk space for three copies
of /usr/src right now, and I'm not sure I can justify the cost just for
a few dinky patches).

Right now I've got a script that copies the code in from the sup area
(after doing a prune), and then applies all patchfiles found in a
special directory -- to make it simple to add new patches in.
My update-source script also copies the new kernel configs into the
appropriate directory -- this is special-cased, and there is probably
a more general solution.

Anyone got similar scripts and mechanisms they want to share?