Fixed #17627 -- Renamed util.py files to utils.py

Thanks PaulM for the suggestion and Luke Granger-Brown and
Wiktor Kołodziej for the initial patch.

docs/ref/forms/api.txt

@@ -571,12 +571,12 @@ method you're using::
 Customizing the error list format
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-By default, forms use ``django.forms.util.ErrorList`` to format validation
+By default, forms use ``django.forms.utils.ErrorList`` to format validation
 errors. If you'd like to use an alternate class for displaying errors, you can
 pass that in at construction time (replace ``__unicode__`` by ``__str__`` on
 Python 3)::
 
-    >>> from django.forms.util import ErrorList
+    >>> from django.forms.utils import ErrorList
     >>> class DivErrorList(ErrorList):
     ...     def __unicode__(self):
     ...         return self.as_divs()
@@ -592,6 +592,10 @@ Python 3)::
     <p>Sender: <input type="email" name="sender" value="invalid email address" /></p>
     <p>Cc myself: <input checked="checked" type="checkbox" name="cc_myself" /></p>
 
+.. versionchanged:: 1.7
+
+    ``django.forms.util`` was renamed to ``django.forms.utils``.
+
 More granular output
 ~~~~~~~~~~~~~~~~~~~~
 

docs/ref/forms/validation.txt

@@ -219,10 +219,10 @@ through the ``Form.non_field_errors()`` method.
 
 When you really do need to attach the error to a particular field, you should
 store (or amend) a key in the ``Form._errors`` attribute. This attribute is an
-instance of a ``django.forms.util.ErrorDict`` class. Essentially, though, it's
+instance of a ``django.forms.utils.ErrorDict`` class. Essentially, though, it's
 just a dictionary. There is a key in the dictionary for each field in the form
 that has an error. Each value in the dictionary is a
-``django.forms.util.ErrorList`` instance, which is a list that knows how to
+``django.forms.utils.ErrorList`` instance, which is a list that knows how to
 display itself in different ways. So you can treat ``_errors`` as a dictionary
 mapping field names to lists.