Fixed pk uniqueness validation for new objects created outside of a ModelForm. Also removed need for ModelForm to poke at Model._state.adding, keeping it an internal ORM concern.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14613 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/model_regress/models.py

@@ -58,6 +58,8 @@ class BrokenUnicodeMethod(models.Model):
         # object).
         return 'Názov: %s' % self.name
 
+class NonAutoPK(models.Model):
+    name = models.CharField(max_length=10, primary_key=True)
 
 __test__ = {'API_TESTS': """
 (NOTE: Part of the regression test here is merely parsing the model