import a local patch from build82

commit adfdc14c7ff3dbafe33d315ac2441d46ee9ef8f5
Author: Mitsuru Y <mitsuruy@reallyenglish.com>
Date:   Tue Dec 11 15:18:40 2012 +0900

    make mongorestore be quiet
Merge pull request #16 from reallyenglish/tomoyukis

import a local patch from build82