sync with freebsd 5.3 (it now uses nsswitch.conf instead of host.conf).
sync with freebsd 5.3 (it now uses nsswitch.conf instead of host.conf).

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame