added do_zeros so moxi stats are optionally more self-documenting
added do_zeros so moxi stats are optionally more self-documenting

couchbase/moxi,zbase/moxi,membase/moxi,zbase/moxi,couchbase/moxi,couchbase/moxi,couchbase/moxi,steveyen/moxi,couchbase/moxi,membase/moxi,membase/moxi,steveyen/moxi,membase/moxi,steveyen/moxi,membase/moxi,zbase/moxi,zbase/moxi,zbase/moxi,couchbase/moxi,steveyen/moxi,steveyen/moxi,membase/moxi