This avoid using `nobody` as user since multiple services fallback to
this user, resulting in a security issue. The UID was taken from Gentoos
`acct-user` repository.

https://gitweb.gentoo.org/repo/gentoo.git/tree/acct-user/memcached/memcached-0-r1.ebuild

Signed-off-by: Paul Spooren <mail@aparcar.org>

This adds the memcached package from the old svn package fee. I adopt
the licensing information an will maintain the package in the future.
This request also updates memcached to the last stable version 1.4.20.
Building was testet with target x86_64, ar71xx and avr32

Signed-off-by: Thomas Heil <heil@terminal-consulting.de>