[package] add sslstrip

[package] add sslstrip

This patch adds sslstrip (http://www.thoughtcrime.org/software/sslstrip)
to OpenWrt.

A MITM tool that implements Moxie Marlinspike's HTTPS stripping attacks.
It will transparently hijack HTTP traffic on a network,
watch for HTTPS links and redirects, then map those links
into either look-alike HTTP links or homograph-similar HTTPS
links. It also supports modes for supplying a favicon which
looks like a lock icon, selective logging, and session denial.

Signed-off-by: Luis Alberto Dallos Roa <luis.dallos@gmail.com>
SVN-Revision: 22892