[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>
git-svn-id: svn://svn.openwrt.org/openwrt/packages@22892 3c298f89-4303-0410-b956-a3cf2f4a3e73