Move python-related projects under cmake

Change-Id: I3c0ba3e84af041fe1b9ddd231764e026f8a7169a
Reviewed-on: http://review.couchbase.org/30459
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>