Fixture validation errors should report their data

[freyley]

For example, here's what django/db/models/fields/init.py has for lines 341-348:

def to_python(self, value):

if value is None:

return value

try:

return int(value)

except (TypeError, ValueError):

raise exceptions.ValidationError(

_("This value must be an integer.") )

Changing line 348 to:

_("(%s) must be an integer." % value) )

means that when you convert a text field to a joined object, you know which one's broken where. (Other places in that file do the same thing)