wip/inetdxtra 20140904_src NetBSD

inetdxtra is a group of additional servers to add new protocols to inetd/xinetd. These programs are all tiny, written in C with no dependences and use well under 100Kb of RAM each. With them being inetd servers, they only run when a request is made or a session in progress.

Servers include:

in.www - An inetd based webserver with CGI support in.proxy - An inetd based HTTP proxy server in.jabberd - An inetd based jabber server in.mvp - An inetd based version of the mvprelay.c file in.dns - An inetd based authoritative DNS server in.dhcp - An inetd based DHCP server in.smtp - An inetd based SMTP relay in.ctcs - An inetd based CTCS server for enhanced CTorrent clients