Comments typos fix.
Remove duplicated code.
Avoid unnecessary key_ field fetch.
Fix for QuotaLimitingStore: Passing storestats for the current store instead of the aggregate
Merge pull request #196 from icefury71/quota_per_store_stats_fix

Fix for QuotaLimitingStore: Passing storestats for the current store ins...
Releasing Voldemort 1.8.6 containing Quota (per store instead of aggregate) fix.
Merge pull request #188 from d4mian/minor-changes

Comment typos, duplicate code removal and avoid unnecessary fetch of column key_ from the database.