Finish out bitcask backend and make sure it passes standard test
Finish out bitcask backend and make sure it passes standard test

elkingtonmcb/riak,planobe/riak,DavidAlphaFox/riak,basho/riak,wwezhuimeng/riak_search,glickbot/riak,planobe/riak,yangchengjian/riak,xuejianhai/riak_search,wwezhuimeng/riak_search,xuejianhai/riak,biddyweb/riak,xuejianhai/riak_search,amyvmiwei/riak,authbox-lib/riak,basho/riak_search,GabrielNicolasAvellaneda/riak,basho/riak_search,laurenrother/riak