fix projected vs max query size check for queries w/ LIMIT clause [JIRA: RIAK-3195] (#1609)
fix projected vs max query size check for queries w/ LIMIT clause [JIRA: RIAK-3195] (#1609)

* qry_worker: fix max query size check w/ LIMIT
* qry_worker: more accurate lager message for large query cancellation
andytill/riak_kv