CBLT-224:  only making 64-bit CouchbaseLite.framework, not CouchbaseLiteListener.framework

Change-Id: I05a139ff06d539b3170254ab2ecb869780c4d228
Reviewed-on: http://review.couchbase.org/33725
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>