title: Month names inflection in Rails I18n
body: <p>I would like to use different case of month name in Polish. For example now it works like this:</p>
  
  <pre><code>&gt;&gt; I18n.l Time.now, :format =&gt; "%e %B"
  =&gt; "14 styczeń"
  </code></pre>
  
  <p>but I would like to specify another format of month:</p>
  
  <pre><code>&gt;&gt; I18n.l Time.now, :format =&gt; "%e %Q"
  =&gt; "14 stycznia"
  </code></pre>
  
  <p>Translated month names are in my pl.yml file in <code>pl.date.month_names</code>. And I don't want to change it. I can add <code>pl.date.another_month_names</code> in the other case, but I don't know how to make <code>I18n.l</code> method to use it.</p>
  
  <p>So how can I achive that? Other solutions (helpers, custom methods etc.) are also welcome.</p>