Build my own memcached again

Change-Id: Idc4f1f59494851c67cc776a89e16da542776943a
Reviewed-on: http://review.couchbase.org/29327
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>