Remove projects squashed with others

cbsasl ==> memcached
libconflate, libvbucket ==> moxi

Change-Id: Ia7bf0418211ff5eac19f9d52f62d68c05e38311b
Reviewed-on: http://review.couchbase.org/34638
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>