Roll riak-cs rel version to 1.4.0
Roll riak-cs rel version to 1.4.0

laurenrother/riak_cs,dragonfax/riak_cs,GabrielNicolasAvellaneda/riak_cs,basho/riak_cs,basho/riak_cs,dragonfax/riak_cs,GabrielNicolasAvellaneda/riak_cs,dragonfax/riak_cs,sdebnath/riak_cs,yangchengjian/riak_cs,dragonfax/riak_cs,laurenrother/riak_cs,laurenrother/riak_cs,yangchengjian/riak_cs,basho/riak_cs,sdebnath/riak_cs,sdebnath/riak_cs,yangchengjian/riak_cs,laurenrother/riak_cs,sdebnath/riak_cs,GabrielNicolasAvellaneda/riak_cs,basho/riak_cs,yangchengjian/riak_cs,GabrielNicolasAvellaneda/riak_cs