RPM that modifies /etc/sysctl.conf

[Joe Van Dyk <joevandyk gmail com>]

Say I want to add the following lines to /etc/sysctl.conf and do it via a RPM:

kernel.shmmax = 200000000
kernel.shmall = 20000000

Would my RPM just contain a patch?  Or would I not want to do this
kind of thing through an RPM?

Our software requires a bunch of changes to a linux box in order to
run (modified kernel, the above change, a new compiler, etc).  RPMs
are a sane way of pushing out the changes to the machines, right?

Thanks,
Joe