Pump up dhcpd_makeconf ...
* Add -i option to install the new dhcpd file into place, backing up the old version. Does not restart dhcpd though; that is left to someone else at the moment. May change later. Without -i, works as before, writing the new config file to stdout. Of course, must use the standard locking protocol to serialize when using -i, lest we end up with a garbled dhcpd.conf file. * Add -t option to specify the template file. Changed default behaviour so that without any args, uses the template file in /usr/local/etc. Together with -i option, this moves the two hardwired paths to a single place (script). * Changed how utiils/newnode script calls dhcpd_makeconf (call with just -i option to let dhcpd_makeconf handle all that icky stuff). * Changed how install/boss-install script calls dhcpd_makeconf (call with just -i option to let dhcpd_makeconf handle all that icky stuff). * Also change boss-install to use install target in dhcpd directory, to install the template file.