title: Update data file
body: <p>(version 9)
  i need to update odoo/openerp/addons/base/res/res_currency_data.xml file</p>
  
  <p>i created module added field to res.currency and added data file in my modules data folder. but my field is not updating. any suggestions?</p>
  
  <pre class="lang-py prettyprint-override"><code>from openerp import models, fields
  
  
  class ResCurrency(models.Model):
      _inherit = 'res.currency'
  
  currency_word = fields.Char(translate=True, help='HELP')
  </code></pre>
  
  <p>and this is my data xml file.</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;openerp&gt;
      &lt;data noupdate="0"&gt;
          &lt;!-- Currencies --&gt;
          &lt;record id="base.USD" model="res.currency"&gt;
              &lt;field name="currency_word"&gt;Dollars&lt;/field&gt;
          &lt;/record&gt;
  
      &lt;/data&gt;
  &lt;/openerp&gt;
  </code></pre>
  
  <p>and xml for field to show up in form view. </p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;openerp&gt;
      &lt;data&gt;
  
          &lt;record id="view_currency_form" model="ir.ui.view"&gt;
              &lt;field name="name"&gt;res.currency.form&lt;/field&gt;
              &lt;field name="model"&gt;res.currency&lt;/field&gt;
              &lt;field name="inherit_id" ref="base.view_currency_form"/&gt;
              &lt;field name="arch" type="xml"&gt;
                  &lt;field name="name" position="after"&gt;
                      &lt;field name="currency_word"/&gt;
                  &lt;/field&gt;
              &lt;/field&gt;
          &lt;/record&gt;
  
      &lt;/data&gt;
  &lt;/openerp&gt;
  </code></pre>