Fixed get_or_create test case for Oracle by re-raising the more specific IntegrityError for "ORA-01400: Cannot insert NULL into [table.col]"
Fixed get_or_create test case for Oracle by re-raising the more specific IntegrityError for "ORA-01400: Cannot insert NULL into [table.col]"

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@8545 bcc190cf-cafb-0310-a4f2-bffc1f526a37

FlaPer87/django-nonrel,aparo/django-nonrel,aparo/django-nonrel,FlaPer87/django-nonrel,aparo/django-nonrel,FlaPer87/django-nonrel