some packages don't list their /etc/default/ file

[Dan Jacobson <jidanni@jidanni.org>]

Some packages don't list their /etc/default/ file as part of the package:
# for i in /etc/default/*; do dpkg -S $i;done
dpkg: /etc/default/alsa not found.
aumix: /etc/default/aumix
cdrecord: /etc/default/cdrecord
libc6: /etc/default/devpts
dnsmasq: /etc/default/dnsmasq
dpkg: /etc/default/exim4 not found.
dpkg: /etc/default/fetchmail not found.
dpkg: /etc/default/hotplug not found.
initrd-tools: /etc/default/initrd-tools.sh
dpkg: /etc/default/iptables not found.
libnss-db: /etc/default/libnss-db
dpkg: /etc/default/noffle not found.
dpkg: /etc/default/rcS not found.
cdrecord: /etc/default/rscsi
spamassassin: /etc/default/spamassassin
ssh: /etc/default/ssh