brewkit.rb changes ENV destructively, so lets not do that everytime a formula
is required. Now it's possible for other tools to require a formula
description without worrying about side-effects.
LFTP is sophisticated ftp/http client, file transfer program supporting a
number of network protocols. Like BASH, it has job control and uses readline
library for input. It has bookmarks, built-in mirror, can transfer several
files in parallel. It was designed with reliability in mind.
Signed-off-by: Max Howell <max@methylblue.com>
Added MD5 and modified tweaks to the ENV slightly.
