literal name_enable wherever possible, and ${name}_enable
when it's not, to prepare for the demise of set_rcvar().
In cases where I had to hand-edit unusual instances also
modify formatting slightly to be more uniform (and in
some cases, correct). This includes adding some $FreeBSD$
tags, and most importantly moving rcvar= to right after
name= so it's clear that one is derived from the other.
Atftp is a client/server implementation of the TFTP protocol that
implements RFCs 1350, 2090, 2347, 2348, and 2349. The server is
multi-threaded and the client presents a friendly interface using
libreadline. The current server implementation lacks IPv6 support.