Added more tests to custom_pk unit-test model
Added more tests to custom_pk unit-test model

git-svn-id: http://code.djangoproject.com/svn/django/trunk@461 bcc190cf-cafb-0310-a4f2-bffc1f526a37

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extra : convert_revision : 85e70dbef0a73e2bab55df6ca5de8b3b54cb4db5

adieu/django-nonrel,heracek/django-nonrel,heracek/django-nonrel,adieu/django-nonrel,adieu/django-nonrel,heracek/django-nonrel