[CBD-1191]: Initial checkins for libmemcached and memcached commit validation.
Change-Id: Ia04182516ab7ff1c1178f4a6bf864d02fde6ea4f
Reviewed-on: http://review.couchbase.org/34343
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Tested-by: Eric Limare <eric.limare@couchbase.com>