title: Mongo --quiet Not Suppressing --eval output
body: <p>I'm writing this script that takes in t and uses it in test.js. I'm going to have the output be emailed to me and my collegues. </p>
  
  <pre><code>% mongo my_db --eval 't=9999;' --quiet test.js
  9999
  ------------------------------------------------
  Info about stuff going back 9999 days to 2012-08-17.
  ------------------------------------------------
  Stuff x: 433321 (12.43%)
  Stuff y: 2723426 (81.57%)
  Total: 4524524524
  </code></pre>
  
  <p>Is there a way to not have what I pass in to --eval be outputted to console so I don't have that dangling '9999' at the top of my results?</p>
  
  <p><strong>Edit: This may be a bug with the --quiet option</strong></p>
  
  <p>See: 
  <a href="https://jira.mongodb.org/browse/SERVER-4391" rel="noreferrer">https://jira.mongodb.org/browse/SERVER-4391</a></p>