Fixes #2993, Refs #2918 -- Reverted [3960]; [3960] fixed a potential data validation problem for SQLite, but broke usage of LazyDate. The proper fix is to complete the model validators to catch _all_ invalid inputs.
Fixes #2993, Refs #2918 -- Reverted [3960]; [3960] fixed a potential data validation problem for SQLite, but broke usage of LazyDate. The proper fix is to complete the model validators to catch _all_ invalid inputs.

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%404105

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